对话框函数系列之一

Option Explicit

Private Type OPENFILENAME
lStructSize As Long
hwnd As Long
hInstance As Long
lpstrFilter As String
lpstrCustomFilter As String
nMaxCustFilter As Long
nFilterIndex As Long
lpstrFile As String
nMaxFile As Long
lpstrFileTitle As String
nMaxFileTitle As Long
lpstrInitialDir As String
lpstrTitle As String
Flags As Long
nFileOffset As Integer
nFileExtension As Integer
lpstrDefExt As String
lCustData As Long
lpfnHook As Long
lpTemplateName As String
End Type

Private Type COLORSTRUC
lStructSize As Long
hwnd As Long
hInstance As Long
rgbResult As Long
lpCustColors As String
Flags As Long
lCustData As Long
lpfnHook As Long
lpTemplateName As String
End Type

Private Const LF_FACESIZE = 32

Private Type LogFont
lfHeight As Long
lfWidth As Long
lfEscapement As Long
lfOrientation As Long
lfWeight As Long
lfItalic As Byte
lfUnderline As Byte
lfStrikeOut As Byte
lfCharSet As Byte
lfOutPrecision As Byte
lfClipPrecision As Byte
lfQuality As Byte
lfPitchAndFamily As Byte
lfFaceName(LF_FACESIZE) As Byte
End Type

Private Type FONTSTRUC
lStructSize As Long
hwnd As Long
hDC As Long
lpLogFont As Long
iPointSize As Long
Flags As Long
rgbColors As Long
lCustData As Long
lpfnHook As Long
lpTemplateName As String
hInstance As Long
lpszStyle As String
nFontType As Integer
MISSING_ALIGNMENT As Integer
nSizeMin As Long
nSizeMax As Long
End Type

Public Type DEVMODE
dmDeviceName As String * 32
dmSpecVersion As Integer
dmDriverVersion As Integer
dmSize As Integer
dmDriverExtra As Integer
dmFields As Long
dmOrientation As Integer
dmPaperSize As Integer
dmPaperLength As Integer
dmPaperWidth As Integer
dmScale As Integer
dmCopies As Integer
dmDefaultSource As Integer
dmPrintQuality As Integer
dmColor As Integer
dmDuplex As Integer
dmYResolution As Integer
dmTTOption As Integer
dmCollate As Integer
dmFormName As String * 32
dmUnusedPadding As Integer
dmBitsPerPel As Integer
dmPelsWidth As Long
dmPelsHeight As Long
dmDisplayFlags As Long
dmDisplayFreq As Long
End Type

Private Type PRINTDLGSTRUC
lStructSize As Long
hwnd As Long
hDevMode As Long
hDevNames As Long
hDC As Long
Flags As Long
nFromPage As Integer
nToPage As Integer
nMinPage As Integer
nMaxPage As Integer
nCopies As Integer
hInstance As Long
lCustData As Long
lpfnPrintHook As Long
lpfnSetupHook As Long
lpPrintTemplateName As String
lpSetupTemplateName As String
hPrintTemplate As Long
hSetupTemplate As Long
End Type

Public Type PRINTPROPS
Cancel As Boolean
Device As String
Copies As Integer
Collate As Boolean
File As Boolean
All As Boolean
Pages As Boolean
Selection As Boolean
FromPage As Integer
ToPage As Integer
DM As DEVMODE
End Type

Private Type SHITEMID
cb As Long
abID As Byte
End Type

Private Type ITEMIDLIST
mkid As SHITEMID
End Type

Private Type BROWSEINFO
hOwner As Long ‘主句柄
pidlRoot As Long ‘展开根目录
pszDisplayName As String
lpszTitle As String ‘列表框标题,这里是用的long,所以得用lstrcat获取字符指针了
ulFlags As Long ‘规定只能选择文件夹,其他无效
‘lpfn As Long
lpfnCallback As Long
lParam As Long
iImage As Long
End Type

‘//
‘// Win32s (Private Functions for Wrappers Below)
‘//

Private Declare Function GetOpenFileName Lib “comdlg32.dll” Alias “GetOpenFileNameA” (pOpenfilename As OPENFILENAME) As Long
Private Declare Function GetSaveFileName Lib “comdlg32.dll” Alias “GetSaveFileNameA” (pOpenfilename As OPENFILENAME) As Long
Private Declare Function PrintDlg Lib “comdlg32.dll” Alias “PrintDlgA” (pPrintdlg As PRINTDLGSTRUC) As Long
Private Declare Function ChooseColor Lib “comdlg32.dll” Alias “ChooseColorA” (pChoosecolor As COLORSTRUC) As Long
Private Declare Function ChooseFont Lib “comdlg32.dll” Alias “ChooseFontA” (pChoosefont As FONTSTRUC) As Long
Private Declare Function GlobalAlloc Lib “kernel32” (ByVal wFlags As Long, ByVal dwBytes As Long) As Long
Private Declare Function GlobalFree Lib “kernel32” (ByVal hMem As Long) As Long
Private Declare Function GlobalLock Lib “kernel32” (ByVal hMem As Long) As Long
Private Declare Function GlobalUnlock Lib “kernel32” (ByVal hMem As Long) As Long
Private Declare Sub CopyMemory Lib “kernel32” Alias “RtlMoveMemory” (hpvDest As Any, hpvSource As Any, ByVal cbCopy As Long)
Private Declare Function SHGetPathFromIDList Lib “shell32.dll” Alias “SHGetPathFromIDListA” (ByVal pidl As Long, ByVal pszPath As String) As Long
Private Declare Function SHGetSpecialFolderLocation Lib “shell32.dll” (ByVal hwndOwner As Long, ByVal nFolder As Long, pidl As ITEMIDLIST) As Long
Private Declare Function SHBrowseForFolder Lib “shell32.dll” Alias “SHBrowseForFolderA” (lpBrowseInfo As BROWSEINFO) As Long ‘ITEMIDLIST
Private Declare Function WriteProfileString Lib “kernel32” Alias “WriteProfileStringA” (ByVal lpszSection As String, ByVal lpszKeyName As String, ByVal lpszString As String) As Long
Private Declare Function GetProfileString Lib “kernel32” Alias “GetProfileStringA” (ByVal lpAppName As String, ByVal lpKeyName As String, ByVal lpDefault As String, ByVal lpReturnedString As String, ByVal nSize As Long) As Long
Private Declare Function SendMessageByString Lib “user32” Alias “SendMessageA” (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As String) As Long
Private Declare Function SendMessage Lib “user32” Alias “SendMessageA” (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal IParam As String) As Long
Private Declare Function lstrcat Lib “kernel32” Alias “lstrcatA” (ByVal lpStringl As String, ByVal lpString2 As String) As Long
Private Declare Sub CoTaskMemFree Lib “ole32.dll” (ByVal hMem As Long)
‘//
‘// Win32s (Public)
‘//

Declare Function WinHelp Lib “user32” Alias “WinHelpA” (ByVal hwnd As Long, ByVal lpHelpFile As String, ByVal wCommand As Long, ByVal dwData As Any) As Long
Declare Function HTMLHelp Lib “hhctrl.ocx” Alias “HtmlHelpA” (ByVal hwnd As Long, ByVal szFilename As String, ByVal dwCommand As Long, ByVal dwData As Any) As Long

‘//
‘// Constants (Public for Print Dialog Box)
‘//

Public Const PD_NOSELECTION = &H4
Public Const PD_DISABLEPRINTTOFILE = &H80000
Public Const PD_PRINTTOFILE = &H20
Public Const PD_RETURNDC = &H100
Public Const PD_RETURNDEFAULT = &H400
Public Const PD_RETURNIC = &H200
Public Const PD_SELECTION = &H1
Public Const PD_SHOWHELP = &H800
Public Const PD_NOPAGENUMS = &H8
Public Const PD_PAGENUMS = &H2
Public Const PD_ALLPAGES = &H0
Public Const PD_COLLATE = &H10
Public Const PD_HIDEPRINTTOFILE = &H100000

‘//
‘// Constants (Public for WinHelp)
‘//

Public Const HELP_COMMAND = &H102&
Public Const HELP_CONTENTS = &H3&
Public Const HELP_CONTEXT = &H1
Public Const HELP_CONTEXTPOPUP = &H8&
Public Const HELP_FORCEFILE = &H9&
Public Const HELP_HELPONHELP = &H4
Public Const HELP_INDEX = &H3
Public Const HELP_KEY = &H101
Public Const HELP_MULTIKEY = &H201&
Public Const HELP_PARTIALKEY = &H105&
Public Const HELP_QUIT = &H2
Public Const HELP_SETCONTENTS = &H5&
Public Const HELP_SETINDEX = &H5
Public Const HELP_SETWINPOS = &H203&

‘//
‘// Constants (Public for HTMLHelp)
‘//

Public Const HH_DISPLAY_TOPIC = &H0&
Public Const HH_HELP_FINDER = &H0&
Public Const HH_DISPLAY_TOC = &H1& ‘// Currently Not Implemented
Public Const HH_DISPLAY_INDEX = &H2& ‘// Currently Not Implemented
Public Const HH_DISPLAY_SEARCH = &H3& ‘// Currently Not Implemented
Public Const HH_SET_WIN_TYPE = &H4&
Public Const HH_GET_WIN_TYPE = &H5&
Public Const HH_GET_WIN_HANDLE = &H6&
Public Const HH_ENUM_INFO_TYPE = &H7&
Public Const HH_SET_INFO_TYPE = &H8&
Public Const HH_SYNC = &H9&
Public Const HH_ADD_NAV_UI = &H10& ‘// Currently Not Implemented
Public Const HH_ADD_BUTTON = &H11& ‘// Currently Not Implemented
Public Const HH_GETBROWSER_APP = &H12& ‘// Currently Not Implemented
Public Const HH_KEYWORD_LOOKUP = &H13&
Public Const HH_DISPLAY_TEXT_POPUP = &H14&
Public Const HH_HELP_CONTEXT = &H15&
Public Const HH_TP_HELP_CONTEXTMENU = &H16&
Public Const HH_TP_HELP_WM_HELP = &H17&
Public Const HH_CLOSE_ALL = &H18&
Public Const HH_ALINK_LOOKUP = &H19&
Public Const HH_GET_LAST_ERROR = &H20& ‘// Currently Not Implemented
Public Const HH_ENUM_CATEGORY = &H21&
Public Const HH_ENUM_CATEGORY_IT = &H22&
Public Const HH_RESET_IT_FILTER = &H23&
Public Const HH_SET_INCLUSIVE_FILTER = &H24&
Public Const HH_SET_EXCLUSIVE_FILTER = &H25&
Public Const HH_SET_GUID = &H26&
Public Const HH_INTERNAL = &H255&

‘//
‘// Constants (Private)
‘//

Private Const FW_BOLD = 700
Private Const GMEM_MOVEABLE = &H2
Private Const GMEM_ZEROINIT = &H40
Private Const GHND = (GMEM_MOVEABLE Or GMEM_ZEROINIT)
Private Const OFN_ALLOWMULTISELECT = &H200
Private Const OFN_CREATEPROMPT = &H2000
Private Const OFN_ENABLEHOOK = &H20
Private Const OFN_ENABLETEMPLATE = &H40
Private Const OFN_ENABLETEMPLATEHANDLE = &H80
Private Const OFN_EXPLORER = &H80000
Private Const OFN_EXTENSIONDIFFERENT = &H400
Private Const OFN_FILEMUSTEXIST = &H1000
Private Const OFN_HIDEREADONLY = &H4
Private Const OFN_LONGNAMES = &H200000
Private Const OFN_NOCHANGEDIR = &H8
Private Const OFN_NODEREFERENCELINKS = &H100000
Private Const OFN_NOLONGNAMES = &H40000
Private Const OFN_NONETWORKBUTTON = &H20000
Private Const OFN_NOREADONLYRETURN = &H8000
Private Const OFN_NOTESTFILECREATE = &H10000
Private Const OFN_NOVALIDATE = &H100
Private Const OFN_OVERWRITEPROMPT = &H2
Private Const OFN_PATHMUSTEXIST = &H800
Private Const OFN_READONLY = &H1
Private Const OFN_SHAREAWARE = &H4000
Private Const OFN_SHAREFALLTHROUGH = 2
Private Const OFN_SHARENOWARN = 1
Private Const OFN_SHAREWARN = 0
Private Const OFN_SHOWHELP = &H10
Private Const PD_ENABLEPRINTHOOK = &H1000
Private Const PD_ENABLEPRINTTEMPLATE = &H4000
Private Const PD_ENABLEPRINTTEMPLATEHANDLE = &H10000
Private Const PD_ENABLESETUPHOOK = &H2000
Private Const PD_ENABLESETUPTEMPLATE = &H8000
Private Const PD_ENABLESETUPTEMPLATEHANDLE = &H20000
Private Const PD_NONETWORKBUTTON = &H200000
Private Const PD_PRINTSETUP = &H40
Private Const PD_USEDEVMODECOPIES = &H40000
Private Const PD_USEDEVMODECOPIESANDCOLLATE = &H40000
Private Const PD_NOWARNING = &H80
Private Const CF_ANSIONLY = &H400&
Private Const CF_APPLY = &H200&
Private Const CF_BITMAP = 2
Private Const CF_PRINTERFONTS = &H2
Private Const CF_PRIVATEFIRST = &H200
Private Const CF_PRIVATELAST = &H2FF
Private Const CF_RIFF = 11
Private Const CF_SCALABLEONLY = &H20000
Private Const CF_SCREENFONTS = &H1
Private Const CF_BOTH = (CF_SCREENFONTS Or CF_PRINTERFONTS)
Private Const CF_DIB = 8
Private Const CF_DIF = 5
Private Const CF_DSPBITMAP = &H82
Private Const CF_DSPENHMETAFILE = &H8E
Private Const CF_DSPMETAFILEPICT = &H83
Private Const CF_DSPTEXT = &H81
Private Const CF_EFFECTS = &H100&
Private Const CF_ENABLEHOOK = &H8&
Private Const CF_ENABLETEMPLATE = &H10&
Private Const CF_ENABLETEMPLATEHANDLE = &H20&
Private Const CF_ENHMETAFILE = 14
Private Const CF_FIXEDPITCHONLY = &H4000&
Private Const CF_FORCEFONTEXIST = &H10000
Private Const CF_GDIOBJFIRST = &H300
Private Const CF_GDIOBJLAST = &H3FF
Private Const CF_INITTOLOGFONTSTRUCT = &H40&
Private Const CF_LIMITSIZE = &H2000&
Private Const CF_METAFILEPICT = 3
Private Const CF_NOFACESEL = &H80000
Private Const CF_NOVERTFONTS = &H1000000
Private Const CF_NOVECTORFONTS = &H800&
Private Const CF_NOOEMFONTS = CF_NOVECTORFONTS
Private Const CF_NOSCRIPTSEL = &H800000
Private Const CF_NOSIMULATIONS = &H1000&
Private Const CF_NOSIZESEL = &H200000
Private Const CF_NOSTYLESEL = &H100000
Private Const CF_OEMTEXT = 7
Private Const CF_OWNERDISPLAY = &H80
Private Const CF_PALETTE = 9
Private Const CF_PENDATA = 10
Private Const CF_SCRIPTSONLY = CF_ANSIONLY
Private Const CF_SELECTSCRIPT = &H400000
Private Const CF_SHOWHELP = &H4&
Private Const CF_SYLK = 4
Private Const CF_TEXT = 1
Private Const CF_TIFF = 6
Private Const CF_TTONLY = &H40000
Private Const CF_UNICODETEXT = 13
Private Const CF_USESTYLE = &H80&
Private Const CF_WAVE = 12
Private Const CF_WYSIWYG = &H8000
Private Const CFERR_CHOOSEFONTCODES = &H2000
Private Const CFERR_MAXLESSTHANMIN = &H2002
Private Const CFERR_NOFONTS = &H2001
Private Const CC_ANYCOLOR = &H100
Private Const CC_CHORD = 4
Private Const CC_CIRCLES = 1
Private Const CC_ELLIPSES = 8
Private Const CC_ENABLEHOOK = &H10
Private Const CC_ENABLETEMPLATE = &H20
Private Const CC_ENABLETEMPLATEHANDLE = &H40
Private Const CC_FULLOPEN = &H2
Private Const CC_INTERIORS = 128
Private Const CC_NONE = 0
Private Const CC_PIE = 2
Private Const CC_PREVENTFULLOPEN = &H4
Private Const CC_RGBINIT = &H1
Private Const CC_ROUNDRECT = 256 ‘
Private Const CC_SHOWHELP = &H8
Private Const CC_SOLIDCOLOR = &H80
Private Const CC_STYLED = 32
Private Const CC_WIDE = 16
Private Const CC_WIDESTYLED = 64
Private Const CCERR_CHOOSECOLORCODES = &H5000
Private Const LOGPIXELSY = 90
Private Const CCHDEVICENAME = 32
Private Const CCHFORMNAME = 32
Private Const SIMULATED_FONTTYPE = &H8000
Private Const PRINTER_FONTTYPE = &H4000
Private Const SCREEN_FONTTYPE = &H2000
Private Const BOLD_FONTTYPE = &H100
Private Const ITALIC_FONTTYPE = &H200
Private Const REGULAR_FONTTYPE = &H400
Private Const WM_CHOOSEFONT_GETLOGFONT = (&H400 + 1)
Private Const LBSELCHSTRING = “commdlg_LBSelChangedNotify”
Private Const SHAREVISTRING = “commdlg_ShareViolation”
Private Const FILEOKSTRING = “commdlg_FileNameOK”
Private Const COLOROKSTRING = “commdlg_ColorOK”
Private Const SETRGBSTRING = “commdlg_SetRGBColor”
Private Const FINDMSGSTRING = “commdlg_FindReplace”
Private Const HELPMSGSTRING = “commdlg_help”
Private Const CD_LBSELNOITEMS = -1
Private Const CD_LBSELCHANGE = 0
Private Const CD_LBSELSUB = 1
Private Const CD_LBSELADD = 2
Private Const NOERROR = 0
Private Const CSIDL_DESKTOP = &H0
Private Const CSIDL_PROGRAMS = &H2
Private Const CSIDL_CONTROLS = &H3
Private Const CSIDL_PRINTERS = &H4
Private Const CSIDL_PERSONAL = &H5
Private Const CSIDL_FAVORITES = &H6
Private Const CSIDL_STARTUP = &H7
Private Const CSIDL_RECENT = &H8
Private Const CSIDL_SENDTO = &H9
Private Const CSIDL_BITBUCKET = &HA
Private Const CSIDL_STARTMENU = &HB
Private Const CSIDL_DESKTOPDIRECTORY = &H10
Private Const CSIDL_DRIVES = &H11
Private Const CSIDL_NETWORK = &H12
Private Const CSIDL_NETHOOD = &H13
Private Const CSIDL_FONTS = &H14
Private Const CSIDL_TEMPLATES = &H15
Private Const BIF_RETURNONLYFSDIRS = &H1
Private Const BIF_DONTGOBELOWDOMAIN = &H2
Private Const BIF_STATUSTEXT = &H4
Private Const BIF_RETURNFSANCESTORS = &H8
Private Const BIF_BROWSEFORCOMPUTER = &H1000
Private Const BIF_BROWSEFORPRINTER = &H2000
Private Const HWND_BROADCAST = &HFFFF&
Private Const WM_WININICHANGE = &H1A
Private Const WM_USER = &H400
Private Const BFFM_INITIALIZED = 1
Private Const BFFM_SELCHANGED = 2
Private Const BFFM_SETSTATUSTEXT = (WM_USER + 100)
Private Const BFFM_SETSelectION = (WM_USER + 102)
Private Const BIF_USENEWUI = &H40 ‘对话框上带“新建文件夹”按钮

Private m_CurrentDirectory As String ‘The current directory

‘//
‘// SetDefaultPrinter Function
‘//
‘// Description:
‘// Sets the user’s default printer to the printer represented by the passed printer object.
‘//
‘// Syntax:
‘// BOOL = SetDefaultPrinter(object)
‘//
‘// Example:
‘// Dim objNewPrinter As Printer
‘// Set objNewPrinter = Printers(2)
‘// SetDefaultPrinter objNewPrinter
‘//
Public Function SetDefaultPrinter(objPrn As Printer) As Boolean
Dim szTmp As String
szTmp = objPrn.DeviceName & “,” & objPrn.DriverName & “,” & objPrn.Port
lRet = WriteProfileString(“windows”, “device”, szTmp)
lRet = SendMessageByString(HWND_BROADCAST, WM_WININICHANGE, 0&, “windows”)
End Function

‘//
‘// GetDefaultPrinter Function
‘//
‘// Description:
‘// Retuns the device name of the default printer.
‘//
‘// Syntax:
‘// StrVar = GetDefaultPrinter()
‘//
‘// Example:
‘// szDefPrinter = GetDefaultPrinter
‘//
Public Function GetDefaultPrinter() As String
Dim szTmp As String, dwBuf As Long
dwBuf = 1024
szTmp = Space$(dwBuf + 1)
lRet = GetProfileString(“windows”, “device”, “”, szTmp, dwBuf)
GetDefaultPrinter = Trim(Left(szTmp, lRet))
End Function

‘//
‘// ResetDefaultPrinter Function
‘//
‘// Description:
‘// Resets the default printer to the passed device name.
‘//
‘// Syntax:
‘// BOOL = ResetDefaultPrinter(StrVar)
‘//
‘// Example:
‘// szDefPrinter = GetDefaultPrinter()
‘// If Not ResetDefaultPrinter(szDefPrinter) Then
‘// MsgBox “Could not reset default printer.”, vbExclamation
‘// End If
‘//
Public Function ResetDefaultPrinter(szBuf As String) As Boolean
lRet = WriteProfileString(“windows”, “device”, szBuf)
lRet = SendMessageByString(HWND_BROADCAST, WM_WININICHANGE, 0&, “windows”)
End Function

‘//
‘// BrowseFolder Function
‘//
‘// Description:
‘// Allows the user to interactively browse and select a folder found in the file system.
‘//
‘// Syntax:
‘// StrVar = BrowseFolder(lhWnd, StrVar)
‘//
‘// Example:
‘// szFilename = BrowseFolder(Me.hWnd, “Browse for application folder:”)
‘//
Public Function BrowseFolder(lhWnd As Long, szDialogTitle As String) As String
Dim BI As BROWSEINFO, dwIList As Long, szPath As String, wPos As Integer
BI.hOwner = lhWnd
BI.lpszTitle = szDialogTitle
BI.ulFlags = BIF_RETURNONLYFSDIRS
dwIList = SHBrowseForFolder(BI)
szPath = Space$(512)
lRet = SHGetPathFromIDList(ByVal dwIList, ByVal szPath)
If lRet Then
wPos = InStr(szPath, Chr(0))
BrowseFolder = Left$(szPath, wPos – 1)
Else
BrowseFolder = “”
End If
End Function

‘//
‘// DialogConnectToPrinter Function
‘//
‘// Description:
‘// Allows users to interactively selection and connect to local and network printers.
‘//
‘// Syntax:
‘// DialogConnectToPrinter
‘//
‘// Example:
‘// DialogConnectToPrinter
‘//
Public Function DialogConnectToPrinter() As Boolean
Shell “rundll32.exe shell32.dll,SHHelpShortcuts_RunDLL AddPrinter”, vbNormalFocus
End Function

‘//
‘// ByteToString Function
‘//
‘// Description:
‘// Converts an array of bytes into a string
‘//
‘// Syntax:
‘// StrVar = ByteToString(ARRAY)
‘//
‘// Example:
‘// szBuf = BytesToString(aChars(10))
‘//
Private Function ByteToString(aBytes() As Byte) As String
Dim dwBytePoint As Long, dwByteVal As Long, szOut As String
dwBytePoint = LBound(aBytes)
While dwBytePoint <= UBound(aBytes)
dwByteVal = aBytes(dwBytePoint)
If dwByteVal = 0 Then
ByteToString = szOut
Exit Function
Else
szOut = szOut & Chr$(dwByteVal)
End If
dwBytePoint = dwBytePoint + 1
Wend
ByteToString = szOut
End Function

‘//
‘// DialogColor Function
‘//
‘// Description:
‘// Displays the Color common dialog box and sets a passed controls foreground color.
‘//
‘// Syntax:
‘// BOOL = DialogColor(lhWnd, CONTROL)
‘//
‘// Example:
‘// Dim yn as Boolean
‘// yn = DialogColor(Me.hWnd, txtEditor)
‘//
Public Function DialogColor(lhWnd As Long, C As Control) As Boolean
Dim CS As COLORSTRUC, CustColor(16) As Long
CS.lStructSize = Len(CS)
CS.hwnd = lhWnd
CS.hInstance = App.hInstance
CS.Flags = CC_SOLIDCOLOR
CS.lpCustColors = String$(16 * 4, 0)
lRet = ChooseColor(CS)
If lRet = 0 Then
DialogColor = False
Else
DialogColor = True
C.ForeColor = CS.rgbResult
End If
End Function

‘//
‘// DialogFont Function
‘//
‘// Description:
‘// Displays the Font common dialog box and sets a passed controls font properties.
‘//
‘// Syntax:
‘// BOOL = DialogFont(lhWnd, CONTROL)
‘//
‘// Example:
‘// Dim yn as Boolean
‘// yn = DialogFont(Me.hWnd, txtEditor)
‘//
Public Function DialogFont(lhWnd As Long, C As Control) As Boolean
Dim lf As LogFont, FS As FONTSTRUC
Dim lLogFontAddress As Long, lMemHandle As Long
If C.Font.Bold Then lf.lfWeight = FW_BOLD
If C.Font.Italic = True Then lf.lfItalic = 1
If C.Font.Underline = True Then lf.lfUnderline = 1
FS.lStructSize = Len(FS)
lMemHandle = GlobalAlloc(GHND, Len(lf))
If lMemHandle = 0 Then
DialogFont = False
Exit Function
End If
lLogFontAddress = GlobalLock(lMemHandle)
If lLogFontAddress = 0 Then
DialogFont = False
Exit Function
End If
CopyMemory ByVal lLogFontAddress, lf, Len(lf)
FS.lpLogFont = lLogFontAddress
FS.iPointSize = C.Font.Size * 10
FS.Flags = CF_SCREENFONTS Or CF_EFFECTS
If ChooseFont(FS) = 1 Then
CopyMemory lf, ByVal lLogFontAddress, Len(lf)
If lf.lfWeight >= FW_BOLD Then
C.Font.Bold = True
Else
C.Font.Bold = False
End If
If lf.lfItalic = 1 Then
C.Font.Italic = True
Else
C.Font.Italic = False
End If
If lf.lfUnderline = 1 Then
C.Font.Underline = True
Else
C.Font.Underline = False
End If
C.Font.Name = ByteToString(lf.lfFaceName())
C.Font.Size = CLng(FS.iPointSize / 10)
DialogFont = True
Else
DialogFont = False
End If
End Function

‘//
‘// DialogFile Function
‘//
‘// Description:
‘// Displays the File Open/Save As common dialog boxes.
‘//
‘// Syntax:
‘// StrVar = DialogFile(lhWnd, IntVar, StrVar, StrVar, StrVar, StrVar, StrVar, IntVar)
‘//
‘// Example:
‘// szFilename = DialogFile(Me.hWnd, 1, “Open”, “MyFileName.doc”, “Documents” & “|” & “.doc” & “|” & “All files” & “|” & “.*”, App.Path, “doc”, Path, 1)
‘//
Public Function DialogFile(lhWnd As Long, wMode As Integer, szDialogTitle As String, ByVal szFilename As String, szFilter As String, ByVal szDefDir As String, szDefExt As String, szDestDir As String, ByVal iFilterIndex As Integer) As String
szFilter = Replace(szFilter, “|”, Chr(0), 1, -1, vbBinaryCompare)
Dim OFN As OPENFILENAME, szFile As String, szFileTitle As String
OFN.lStructSize = Len(OFN)
OFN.hwnd = lhWnd
OFN.lpstrTitle = szDialogTitle
OFN.lpstrFile = szFilename & String$(250 – Len(szFilename), 0)
OFN.nMaxFile = BUFFER
OFN.lpstrFileTitle = String$(BUFFER, 0)
OFN.nMaxFileTitle = BUFFER
OFN.lpstrFilter = szFilter
OFN.nFilterIndex = iFilterIndex
OFN.lpstrInitialDir = szDefDir
OFN.lpstrDefExt = szDefExt
If wMode = 1 Then
OFN.Flags = OFN_HIDEREADONLY Or OFN_PATHMUSTEXIST Or OFN_FILEMUSTEXIST
lRet = GetOpenFileName(OFN)
Else
OFN.Flags = OFN_HIDEREADONLY Or OFN_OVERWRITEPROMPT Or OFN_PATHMUSTEXIST
lRet = GetSaveFileName(OFN)
End If
If lRet <> 0 Then
‘// If InStr(OFN.lpstrFileTitle, Chr$(0)) > 0 Then
‘// szFileTitle = Left$(OFN.lpstrFileTitle, InStr(OFN.lpstrFileTitle, Chr$(0)) – 1)
‘// End If
If InStr(OFN.lpstrFile, Chr$(0)) > 0 Then
szFile = Left$(OFN.lpstrFile, InStr(OFN.lpstrFile, Chr$(0)) – 1)
End If
‘// OFN.nFileOffset is the number of characters from the beginning of the
‘// full path to the start of the file name
‘// OFN.nFileExtension is the number of characters from the beginning of the
‘// full path to the file’s extention, including the (.)
‘// MsgBox “File Name is ” & szFileTitle & Chr$(13) & Chr$(10) & “Full path and file is ” & szFile, , “Open”

‘// DialogFile = szFile & “|” & szFileTitle
DialogFile = szFile
szDestDir = Left(szFile, OFN.nFileOffset)
Else
DialogFile = “”
End If
End Function

‘//
‘// DialogOpenFile Function
‘//
‘// Description:
‘// Displays the MultiFile Open As common dialog boxes.
‘//
‘// Syntax:
‘// StrVar = DialogOpenFile(lhWnd, StrVar, StrVar, StrVar)
‘//
‘// Example:
‘// szFilename = DialogOpenFile(Me.hWnd, “Open MultiFile”, “Documents” & “|” & “.doc” & “|” & “All files” & “|” & “.*”, App.Path)
‘//
Public Function DialogOpenFile(lhWnd As Long, szDialogTitle As String, szFilter As String, ByVal szDefDir As String) As String
szFilter = Replace(szFilter, “|”, Chr(0), 1, -1, vbBinaryCompare)
Dim OFN As OPENFILENAME, szFile As String, szFileTitle As String
OFN.lStructSize = Len(OFN)
OFN.hwnd = lhWnd
OFN.lpstrTitle = szDialogTitle
OFN.lpstrFile = Space$(BUFFER – 1) ‘String$(BUFFER, 0) ‘szFilename & String$(250 – Len(szFilename), 0)
OFN.nMaxFile = BUFFER
OFN.lpstrFileTitle = Space$(BUFFER – 1) ‘String$(BUFFER, 0)
OFN.nMaxFileTitle = BUFFER
OFN.lpstrFilter = szFilter
‘OFN.nFilterIndex = iFilterIndex
OFN.lpstrInitialDir = szDefDir
‘OFN.lpstrDefExt = szDefExt
OFN.Flags = OFN_ALLOWMULTISELECT Or OFN_EXPLORER Or OFN_FILEMUSTEXIST
lRet = GetOpenFileName(OFN)
If lRet <> 0 Then
DialogOpenFile = OFN.lpstrFile
Else
DialogOpenFile = “”
End If
End Function

‘//
‘// DialogPrint Function
‘//
‘// Description:
‘// Displays the Print common dialog box and returns a structure containing user entered
‘// information from the common dialog box.
‘//
‘// Syntax:
‘// PRINTPROPS = DialogPrint(lhWnd, BOOL, DWORD)
‘//
‘// Example:
‘// Dim PP As PRINTPROPS
‘// PP = DialogPrint(Me.hWnd, True, PD_PAGENUMS or PD_SELECTION or PD_SHOWHELP)
‘//
Public Function DialogPrint(lhWnd As Long, bPages As Boolean, Flags As Long) As PRINTPROPS
Dim DM As DEVMODE, PD As PRINTDLGSTRUC
Dim lpDM As Long, wNull As Integer, szDevName As String
PD.lStructSize = Len(PD)
PD.hwnd = lhWnd
PD.hDevMode = 0
PD.hDevNames = 0
PD.hDC = 0
PD.Flags = Flags
PD.nFromPage = 0
PD.nToPage = 0
PD.nMinPage = 0
If bPages Then PD.nMaxPage = bPages – 1
PD.nCopies = 0
DialogPrint.Cancel = True
If PrintDlg(PD) Then
lpDM = GlobalLock(PD.hDevMode)
CopyMemory DM, ByVal lpDM, Len(DM)
lpDM = GlobalUnlock(PD.hDevMode)
DialogPrint.Cancel = False
DialogPrint.Device = Left$(DM.dmDeviceName, InStr(DM.dmDeviceName, Chr(0)) – 1)
DialogPrint.FromPage = 0
DialogPrint.ToPage = 0
DialogPrint.All = True
If PD.Flags And PD_PRINTTOFILE Then DialogPrint.File = True Else DialogPrint.File = False
If PD.Flags And PD_COLLATE Then DialogPrint.Collate = True Else DialogPrint.Collate = False
If PD.Flags And PD_PAGENUMS Then
DialogPrint.Pages = True
DialogPrint.All = False
DialogPrint.FromPage = PD.nFromPage
DialogPrint.ToPage = PD.nToPage
Else
DialogPrint.Pages = False
End If
If PD.Flags And PD_SELECTION Then
DialogPrint.Selection = True
DialogPrint.All = False
Else
DialogPrint.Pages = False
End If
If PD.nCopies = 1 Then
DialogPrint.Copies = DM.dmCopies
End If
DialogPrint.DM = DM
End If
End Function

‘//
‘// DialogPrintSetup Function
‘//
‘// Description:
‘// Displays the Print Setup common dialog box.
‘//
‘// Syntax:
‘// BOOL = DialogPrintSetup(lhWnd)
‘//
‘// Example:
‘// If DialogPrintSetup(Me.hWnd) Then
‘// End If
‘//
Public Function DialogPrintSetup(lhWnd As Long) As Boolean
Dim PD As PRINTDLGSTRUC
PD.lStructSize = Len(PD)
PD.hwnd = lhWnd
PD.Flags = PD_PRINTSETUP
lRet = PrintDlg(PD)
End Function

‘//
‘// BrowseForFolder Function
‘//
‘// Description:
‘// Allows the user to interactively browse and select a folder found from a folder in the file system.
‘//
‘// Syntax:
‘// StrVar = BrowseForFolder(lhWnd, StrVar, StrVar)
‘//
‘// Example:
‘// szFilename = BrowseForFolder(Me.hWnd, “Browse for application folder:”, App.Path)
‘//
‘Public Function BrowseForFolder(oWner As Form, sTitle As String, sStartDir As String) As String
Public Function BrowseForFolder(lhWnd As Long, sTitle As String, sStartDir As String) As String
Dim lpIDList As Long
Dim szTitle As String
Dim sBuffer As String
Dim tBrowseInfo As BROWSEINFO
m_CurrentDirectory = sStartDir & vbNullChar
szTitle = sTitle
With tBrowseInfo
.hOwner = lhWnd
.lpszTitle = szTitle ‘lstrcat(szTitle, “”)
.ulFlags = BIF_RETURNONLYFSDIRS + BIF_DONTGOBELOWDOMAIN + BIF_STATUSTEXT
.lpfnCallback = GetAddressofFunction(AddressOf BrowseCallbackProc) ‘get address of function.
End With
lpIDList = SHBrowseForFolder(tBrowseInfo)
If (lpIDList) Then
sBuffer = Space$(BUFFER)
SHGetPathFromIDList lpIDList, sBuffer
sBuffer = Left(sBuffer, InStr(sBuffer, vbNullChar) – 1)
BrowseForFolder = sBuffer
Else
BrowseForFolder = “”
End If
End Function

‘//
‘// BrowseForNewFolder Function
‘//
‘// Description:
‘// Allows the user to interactively browse and select a folder found from a folder in the file system with new folder.
‘//
‘// Syntax:
‘// StrVar = BrowseForNewFolder(lhWnd, StrVar, StrVar)
‘//
‘// Example:
‘// szFilename = BrowseForNewFolder(Me.hWnd, “Browse for application folder:”, App.Path)
‘//
‘Public Function BrowseForNewFolder(oWner As Form, sTitle As String, sStartDir As String) As String
Public Function BrowseForNewFolder(lhWnd As Long, sTitle As String, sStartDir As String) As String
Dim iNull As Integer
Dim lpIDList As Long
Dim szTitle As String
Dim sBuffer As String
Dim tBrowseInfo As BROWSEINFO
m_CurrentDirectory = sStartDir & vbNullChar
szTitle = sTitle
With tBrowseInfo
.hOwner = lhWnd ‘设置主窗体句柄
.lpszTitle = szTitle ‘lstrcat(szTitle, “”)
.ulFlags = BIF_RETURNONLYFSDIRS Or BIF_USENEWUI ‘新建文件夹
.lpfnCallback = GetAddressofFunction(AddressOf BrowseCallbackProc) ‘get address of function.
End With
‘显示列表框
lpIDList = SHBrowseForFolder(tBrowseInfo)
If (lpIDList) Then
sBuffer = String$(BUFFER, 0)
‘获取返回的路径
SHGetPathFromIDList lpIDList, sBuffer
‘释放内存块
CoTaskMemFree lpIDList
iNull = InStr(sBuffer, vbNullChar) ‘去除空格符
If iNull Then sBuffer = Left$(sBuffer, iNull – 1)
End If
BrowseForNewFolder = sBuffer
End Function

Private Function BrowseCallbackProc(ByVal lhWnd As Long, ByVal uMsg As Long, ByVal lp As Long, ByVal pData As Long) As Long
Dim lpIDList As Long
Dim sBuffer As String
If Not ExposeError Then On Error Resume Next
Select Case uMsg
Case BFFM_INITIALIZED
Call SendMessage(lhWnd, BFFM_SETSelectION, 1, m_CurrentDirectory)
Case BFFM_SELCHANGED
sBuffer = Space$(BUFFER)
lRet = SHGetPathFromIDList(lp, sBuffer)
If lRet = 1 Then
Call SendMessage(lhWnd, BFFM_SETSTATUSTEXT, 0, sBuffer)
End If
End Select
BrowseCallbackProc = 0
End Function

Private Function GetAddressofFunction(lAdd As Long) As Long
GetAddressofFunction = lAdd
End Function

设置窗体透明

‘如下两个窗体均为透明,即,可以看到其后的屏幕。

Option Explicit

‘Example
‘Call Translucent(Me.hwnd)’设置当前窗体半透明
‘Translucent oAutoCAD.hwnd’设置已绑定的 AutoCAD 半透明

Private Declare Function GetWindowLong Lib “user32.dll” Alias “GetWindowLongA” (ByVal hwnd As Long, ByVal nIndex As Long) As Long
Private Declare Function SetWindowLong Lib “user32” Alias “SetWindowLongA” (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Private Declare Function SetLayeredWindowAttributes Lib “user32” (ByVal hwnd As Long, ByVal CrKey As Long, ByVal bAlpha As Byte, ByVal dwFlags As Long) As Long

Private Const WS_EX_LAYERED = &H80000
Private Const GWL_EXSTYLE As Long = -20
Private Const LWA_ALPHA = &H2
Private Const LWA_COLORKEY = &H1

‘hWnd是透明窗体的句柄
‘crKey为掩码的颜色,可以用RGB(r,g,b)来指定
‘bAlpha是不透明度,取值范围是(0,255),其中0代表全透明,255代表不透明
‘dwFlags是透明方式,三种取值方式:
‘LWA_ALPHA时,crKey参数无效,bAlpha参数有效
‘LWA_COLORKEY时,颜色为crKey的地方变为透明,bAlpha参数无效
‘LWA_ALPHA Or LWA_COLORKEY时,crKey的地方将变为全透明,其它地方根据bAlpha参数确定透明度
Public Sub Translucent(ByVal hwnd As Long)
On Error Resume Next
SetWindowLong hwnd, GWL_EXSTYLE, GetWindowLong(hwnd, GWL_EXSTYLE) Or WS_EX_LAYERED
SetLayeredWindowAttributes hwnd, RGB(255, 255, 255), 128, LWA_ALPHA
On Error GoTo 0
End Sub

Public Sub NoTranslucent(ByVal hwnd As Long)
On Error Resume Next
SetWindowLong hwnd, GWL_EXSTYLE, GetWindowLong(hwnd, GWL_EXSTYLE) Or WS_EX_LAYERED
SetLayeredWindowAttributes hwnd, RGB(255, 255, 255), 255, LWA_ALPHA
On Error GoTo 0
End Sub

为菜单设置图片

Option Explicit
Private Declare Function GetMenu Lib “user32” (ByVal hwnd As Long) As Long
Private Declare Function GetSubMenu Lib “user32” (ByVal hMenu As Long, ByVal nPos As Long) As Long
Private Declare Function GetMenuItemID Lib “user32” (ByVal hMenu As Long, ByVal nPos As Long) As Long
Private Declare Function ModifyMenu Lib “user32” Alias “ModifyMenuA” (ByVal hMenu As Long, ByVal nPosition As Long, ByVal wFlags As Long, ByVal wIDNewItem As Long, ByVal lpString As String) As Long
Private Declare Function SetMenuItemBitmaps Lib “user32” (ByVal hMenu As Long, ByVal nPosition As Long, ByVal wFlags As Long, ByVal hBitmapUnchecked As Long, ByVal hBitmapChecked As Long) As Long
Private Declare Function GetMenuCheckMarkDimensions Lib “user32” () As Long

‘Example:
‘为当前窗体的第 2 组菜单的第 2 项菜单设置 imgMenu(0) 中的图片
‘Call SetMenuPicture(Me, 2, 3, imgMenu(0))

Public Sub SetMenuPicture(ByVal oForm As Form, ByVal iMenu As Integer, ByVal iSubMenu As Integer, ByVal oImage As Image)
On Error Resume Next
Dim lMenu As Long, lSubMenu As Long, lMenuID As Long
lMenu = GetMenu(oForm.hwnd)
lSubMenu = GetSubMenu(lMenu, iMenu)
lMenuID = GetMenuItemID(lSubMenu, iSubMenu)
lRet = SetMenuItemBitmaps(lMenu, lMenuID, 0, oImage.Picture, 0&)
On Error GoTo 0
End Sub

快速排序与冒泡排序

Sub QuickSort(List() As Double)
Dim I As Double, J As Double, K As Double, b As Double
Dim L As Double, t As Double, r As Double, d As Double
Dim p(1 To 100) As Double
Dim w(1 To 100) As Double
K = 1
p(K) = LBound(List)
w(K) = UBound(List)
L = 1
d = 1
r = UBound(List)
Do
toploop:
If r – L < 9 Then GoTo bubsort I = L J = r While J > I
comp = comp + 1
If List(I) > List(J) Then
swic = swic + 1
t = List(J)
oldx1 = List(J)
oldy1 = J
List(J) = List(I)
oldx2 = List(I)
oldy2 = I
newx1 = List(J)
newy1 = J
List(I) = t
newx2 = List(I)
newy2 = I
d = -d
End If
If d = -1 Then
J = J – 1
Else
I = I + 1
End If
Wend
J = J + 1
K = K + 1
If I – L < r – J Then p(K) = J w(K) = r r = I Else p(K) = L w(K) = I L = J End If d = -d GoTo toploop bubsort: If r – L > 0 Then
For I = L To r
b = I
For J = b + 1 To r
comp = comp + 1
If List(J) <= List(b) Then b = J Next J If I <> b Then
swic = swic + 1
t = List(b)
oldx1 = List(b)
oldy1 = b
List(b) = List(I)
oldx2 = List(I)
oldy2 = I
newx1 = List(b)
newy1 = b
List(I) = t
newx2 = List(I)
newy2 = I
End If
Next I
End If
L = p(K)
r = w(K)
K = K – 1
Loop Until K = 0
End Sub

Sub BubbleSort(List() As Double)
‘Sorts an array using bubble sort algorithm
Dim First As Double, Last As Double
Dim I As Integer, J As Integer
Dim Temp As Double

First = LBound(List)
Last = UBound(List)
For I = First To Last – 1
For J = I + 1 To Last
If List(I) > List(J) Then
Temp = List(J)
List(J) = List(I)
List(I) = Temp
End If
Next J
Next I
End Sub

AutoCAD 的多段线(Polyline)

‘绑定 AutoCAD
Dim I As Integer, J As Integer
Dim oAutoCAD As Object
Call BindAutoCAD(True)

‘打开并绑定文件 D:/Test.dwg
Dim oDraw As Object ‘AutoCAD 多文档之一
Set oDraw = oAutoCAD.Application.Documents.Open(“D:/Test.dwg”)

ReDim oPolyline As Object
Dim dVertices(0 To 14) As Double ‘五个点,四段线
‘Define the 2D polyline points
dVertices(0) = 121
dVertices(1) = 234
dVertices(2) = 0
dVertices(3) = 345
dVertices(4) = 45
dVertices(5) = 0
dVertices(6) = 546
dVertices(7) = 67
dVertices(8) = 0
dVertices(9) = 78
dVertices(10) = 89
dVertices(11) = 0
dVertices(12) = 222
dVertices(13) = 444
dVertices(14) = 0
‘Create a lightweight Polyline object in model space
Set oPolyline = oDraw.ModelSpace.AddPolyline(dVertices)
‘设置每段的宽度
For J = 0 To 3
oPolyline .SetWidth J, 2, 3 ‘第 J 段, 起点宽度 2, 终点宽度 3
Next J
oPolyline .Color = 7 ‘acWhite
oPolyline .Update