检索当前用户打印机的图标

我试图模拟MS Office打印对话框的打印机selectcombobox。 下拉列表中包含左侧有大型打印机图标的打印机名称。 在Vista传真打印机有一个很好的传真图标,共享打印机标记,默认打印机了。 最好的办法是能够查看更多的打印机信息,就像浏览器查看控制面板 – >打印机。

任何想法从哪里开始?

SHGetFileInfo取得了适中的成功,但您的意见是最受欢迎的。

[操作系统:窗口,代码语言:任何]

Solutions Collecting From Web of "检索当前用户打印机的图标"

这是我终于想出来的。 您将需要IShellFolder扩展类型库v1.2为各种OLE接口。 我很积极,这个typelib可以移植到VB6更好的方式,但无论如何这里是结果:

 Option Explicit Private Const CSIDL_PRINTERS As Long = &H4 Private Const SHGFI_PIDL As Long = &H8 Private Const SHGFI_ICON As Long = &H100 Private Const SHGFI_DISPLAYNAME As Long = &H200 Private Const MAX_PATH As Long = 260 Private Declare Function SHGetDesktopFolder Lib "shell32" (ppshf As IShellFolder) As Long Private Declare Function SHGetSpecialFolderLocation Lib "shell32.dll" (ByVal hwndOwner As Long, ByVal nFolder As Long, pidl As Long) As Long Private Declare Sub CoTaskMemFree Lib "ole32.dll" (ByVal pv As Long) Private Declare Function SHGetFileInfo Lib "shell32" Alias "SHGetFileInfoA" (pszPath As Any, ByVal dwFileAttributes As Long, psfi As SHFILEINFO, ByVal cbFileInfo As Long, ByVal uFlags As Long) As Long Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (pDest As Any, pSource As Any, ByVal dwLength As Long) Private Declare Function OleCreatePictureIndirect Lib "olepro32.dll" (lpPictDesc As PICTDESC, riid As Any, ByVal fPictureOwnsHandle As Long, ppRet As IPicture) As Long Private Type SHFILEINFO hIcon As Long iIcon As Long dwAttributes As Long szDisplayName As String * MAX_PATH szTypeName As String * 80 End Type Private Type PICTDESC Size As Long Type As Long hBmpOrIcon As Long hPal As Long End Type Private Sub Command1_Click() Dim IID_IShellFolder As IShellFolderEx_TLB.GUID Dim IID_IPicture(0 To 3) As Long Dim pidlPrinters() As Byte Dim pidlCurrent() As Byte Dim pidlAbsolute() As Byte Dim pDesktopFolder As IShellFolder Dim pPrintersFolder As IShellFolder Dim pEnumIds As IEnumIDList Dim lPtr As Long Dim uInfo As SHFILEINFO Dim uPict As PICTDESC Dim sPrinterName As String Dim oPrinterIcon As StdPicture '--- init consts IID_IShellFolder.Data1 = &H214E6 '--- {000214E6-0000-0000-C000-000000000046} IID_IShellFolder.Data4(0) = &HC0 IID_IShellFolder.Data4(7) = &H46 IID_IPicture(0) = &H7BF80980 '--- {7BF80980-BF32-101A-8BBB-00AA00300CAB} IID_IPicture(1) = &H101ABF32 IID_IPicture(2) = &HAA00BB8B IID_IPicture(3) = &HAB0C3000 '--- init local vars uPict.Size = Len(uPict) uPict.Type = vbPicTypeIcon Call SHGetDesktopFolder(pDesktopFolder) '--- retrieve enumerator of Printers virtual folder Call SHGetSpecialFolderLocation(0, CSIDL_PRINTERS, lPtr) pidlPrinters = pvToPidl(lPtr) Call pDesktopFolder.BindToObject(VarPtr(pidlPrinters(0)), 0, IID_IShellFolder, pPrintersFolder) Call pPrintersFolder.EnumObjects(0, SHCONTF_NONFOLDERS, pEnumIds) '--- loop printers Do While pEnumIds.Next(1, lPtr, 0) = 0 '--- S_OK pidlCurrent = pvToPidl(lPtr) '--- combine pidls: Printers + Current ReDim pidlAbsolute(0 To UBound(pidlPrinters) + UBound(pidlCurrent)) Call CopyMemory(pidlAbsolute(0), pidlPrinters(0), UBound(pidlPrinters) - 1) Call CopyMemory(pidlAbsolute(UBound(pidlPrinters) - 1), pidlCurrent(0), UBound(pidlCurrent) - 1) '--- retrieve info Call SHGetFileInfo(pidlAbsolute(0), 0, uInfo, Len(uInfo), SHGFI_PIDL Or SHGFI_DISPLAYNAME Or SHGFI_ICON) sPrinterName = Left(uInfo.szDisplayName, InStr(uInfo.szDisplayName, Chr$(0)) - 1) '--- extract icon uPict.hBmpOrIcon = uInfo.hIcon Call OleCreatePictureIndirect(uPict, IID_IPicture(0), True, oPrinterIcon) '--- show Set Picture = oPrinterIcon MsgBox sPrinterName Loop End Sub Private Function pvToPidl(ByVal lPtr As Long) As Byte() Dim lTotal As Long Dim nSize As Integer Dim baPidl() As Byte Do Call CopyMemory(nSize, ByVal (lPtr + lTotal), 2) lTotal = lTotal + nSize Loop While nSize <> 0 ReDim baPidl(0 To lTotal + 1) Call CopyMemory(baPidl(0), ByVal lPtr, lTotal + 2) Call CoTaskMemFree(lPtr) pvToPidl = baPidl End Function 

它在C / Win32中很容易和经典(见MS内部的Win32 grp ,资源管理器源代码)

你不说你是如何调用SHGetFileInfo,但我猜你需要设置SHGFI_PIDL标志并使用完全限定的PIDL(也许SHGFI_USEFILEATTRIBUTES)

要获得共享/默认叠加图标,请设置SHGFI_ADDOVERLAYS标志