Question

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我有一个类型为vbPicTypeIcon的stdole.StdPicture对象。我需要将其转换为Type vbPicTypeBitmap。由于项目限制，我需要能够使用Win32或VBA执行此操作。我正在尝试将文件的图标加载到命令栏按钮。这是我到目前为止所拥有的。它产生了一个可爱的黑色方形:)我真的很擅长图形领域，所以请原谅我，如果这是一个基本问题。

Option Explicit

Private Const vbPicTypeBitmap As Long = 1
Private Const vbPicTypeIcon As Long = 3

Private Const SHGFI_ICON As Long = &H100&
Private Const SHGFI_SMALLICON As Long = &H1&

Private Type PICTDESC
    cbSize As Long
    pictType As Long
    hIcon As Long
    hPal As Long
End Type

Private Type typSHFILEINFO
  hIcon As Long
  iIcon As Long
  dwAttributes As Long
  szDisplayName As String * 260
  szTypeName As String * 80
End Type

Private Declare Function DestroyIcon Lib "user32" (ByVal hIcon As Long) As Long
Private Declare Function SHGetFileInfoA Lib "shell32.dll" (ByVal pszPath As String, ByVal dwFileAttributes As Long, psfi As typSHFILEINFO, ByVal cbSizeFileInfo As Long, ByVal uFlags As Long) As Long
Private Declare Function OleCreatePictureIndirect Lib "olepro32.dll" (lpPictDesc As PICTDESC, riid As Any, ByVal fOwn As Long, ipic As stdole.IPictureDisp) As Long

Public Sub Test()
    Dim btn As Office.CommandBarButton
    Dim lngRslt As Long
    Dim lngAppInstc As Long
    Dim strFilePath As String
    Dim tFI As typSHFILEINFO
    Dim pic As stdole.IPictureDisp
    Set btn = TestEnv.GetTestButton
    lngAppInstc = Excel.Application.Hinstance
    strFilePath = TestEnv.GetTestFile
    If LenB(strFilePath) = 0& Then
        Err.Raise 70&
    End If
    SHGetFileInfoA strFilePath, 0&, tFI, LenB(tFI), SHGFI_ICON Or SHGFI_SMALLICON
    Set pic = IconToPicture(tFI.hIcon)
    btn.Picture = pic
Exit_Proc:
    On Error Resume Next
    If tFI.hIcon Then
        lngRslt = DestroyIcon(tFI.hIcon)
    End If
    Exit Sub
Err_Hnd:
    MsgBox Err.Description, vbCritical Or vbMsgBoxHelpButton, Err.Number, Err.HelpFile, Err.HelpContext
    Resume Exit_Proc
    Resume
End Sub

Private Function IconToPicture(ByVal hIcon As Long) As stdole.IPictureDisp
    'Modified from code by Francesco Balena on DevX
    Dim pic As PICTDESC
    Dim guid(0 To 3) As Long
    Dim pRtnVal As stdole.IPictureDisp
    pic.cbSize = LenB(pic)
    'pic.pictType = vbPicTypeBitmap
    pic.pictType = vbPicTypeIcon
    pic.hIcon = hIcon
    ' this is the IPicture GUID {7BF80980-BF32-101A-8BBB-00AA00300CAB}
    ' we use an array of Long to initialize it faster
    guid(0) = &H7BF80980
    guid(1) = &H101ABF32
    guid(2) = &HAA00BB8B
    guid(3) = &HAB0C3000
    ' create the picture,
    ' return an object reference right into the function result
    OleCreatePictureIndirect pic, guid(0), True, pRtnVal
    Set IconToPicture = pRtnVal
End Function

Answer 1

在vbAccelerator.com上点击this post。

编辑：我发现最接近VBA的是officeblogs.net上的帖子。代码采用图标而不是图标句柄。

Answer 2

好的，我已经清理了代码。 ExtractAssociatedIcon方法返回一个64x64图标，因此对于我刚刚硬编码该大小的示例。已删除图片框，并将图像分配给表单的图片属性以避免混淆。

示例：将代码复制到新表单并运行

Option Explicit

Private Declare Function ExtractAssociatedIcon Lib "shell32.dll" Alias "ExtractAssociatedIconA" (ByVal hInst As Long, ByVal lpIconPath As String, lpiIcon As Long) As Long
Private Declare Function DestroyIcon Lib "user32" (ByVal hIcon As Long) As Long
Private Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long
Private Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function CreateCompatibleDC Lib "gdi32" (ByVal hdc As Long) As Long
Private Declare Function CreateCompatibleBitmap Lib "gdi32" (ByVal hdc As Long, ByVal nWidth As Long, ByVal nHeight As Long) As Long
Private Declare Function FillRect Lib "user32" (ByVal hdc As Long, lpRect As RECT, ByVal hBrush As Long) As Long
Private Declare Function DrawIconEx Lib "user32" (ByVal hdc As Long, ByVal xLeft As Long, ByVal yTop As Long, ByVal hIcon As Long, ByVal cxWidth As Long, ByVal cyWidth As Long, ByVal istepIfAniCur As Long, ByVal hbrFlickerFreeDraw As Long, ByVal diFlags As Long) As Long
Private Declare Function SelectObject Lib "gdi32" (ByVal hdc As Long, ByVal hObject As Long) As Long
Private Declare Function OleCreatePictureIndirect Lib "olepro32.dll" (ByRef PicDesc As PICTDESC_BMP, ByRef RefIID As GUID, ByVal fPictureOwnsHandle As Long, ByRef IPic As IPicture) As Long

Private Type GUID
    Data1 As Long
    Data2 As Integer
    Data3 As Integer
    Data4(7) As Byte
End Type

Private Type PICTDESC_BMP
    Size As Long
    Type As Long
    hBmp As Long
    hPal As Long
    Reserved As Long
End Type

Const DI_MASK = &H1
Const DI_IMAGE = &H2
Const DI_NORMAL = DI_MASK Or DI_IMAGE

Private Type RECT
        Left As Long
        Top As Long
        Right As Long
        Bottom As Long
End Type

Private Sub Form_Load()

   Call GetIcon("C:\Program Files\Internet Explorer\iexplore.exe")

End Sub

Private Sub GetIcon(ByVal sFileName As String)
   Dim hIcon As Long
   Dim hAssocIcon As Long
   Dim sAssocFile As String * 260
   Dim sCommand As String
   Dim lDC As Long
   Dim lBmp As Long
   Dim R As RECT
   Dim OldBMP As Long

   Me.AutoRedraw = True
   hIcon = ExtractAssociatedIcon(App.hInstance, sFileName, hAssocIcon)
   If hIcon <> 0 Then 'no icons found - use icon generic icon resource
      'Create a device context, compatible with the screen
      lDC = CreateCompatibleDC(GetDC(0&))
      'Create a bitmap, compatible with the screen
      lBmp = CreateCompatibleBitmap(GetDC(0&), 64, 64)
      'Select the bitmap into the device context
      OldBMP = SelectObject(lDC, lBmp)
      ' Set the rectangles' values
      R.Left = 0
      R.Top = 0
      R.Right = 64
      R.Bottom = 64
      ' Fill the rect with white
      FillRect lDC, R, 0
      ' Draw the icon
      Call DrawIconEx(lDC, 0, 0, hIcon, 64, 64, 0, 0, DI_NORMAL)
      Me.Picture = PictureFromBitmap(lBmp, 0&)
      DestroyIcon (hIcon)
   End If
   Call SelectObject(lDC, OldBMP)
   Call DeleteObject(lDC)

End Sub

Private Function PictureFromBitmap(ByVal hBmp As Long, ByVal hPal As Long) As StdPicture
    Dim IPictureIID As GUID
    Dim IPic As IPicture
    Dim tagPic As PICTDESC_BMP
    Dim lpGUID As Long

    ' Fill in the IPicture GUID
    ' {7BF80980-BF32-101A-8BBB-00AA00300CAB}
    With IPictureIID
        .Data1 = &H7BF80980
        .Data2 = &HBF32
        .Data3 = &H101A
        .Data4(0) = &H8B
        .Data4(1) = &HBB
        .Data4(2) = &H0
        .Data4(3) = &HAA
        .Data4(4) = &H0
        .Data4(5) = &H30
        .Data4(6) = &HC
        .Data4(7) = &HAB
    End With

    ' Set the properties on the picture object
    With tagPic
        .Size = Len(tagPic)
        .Type = vbPicTypeBitmap
        .hBmp = hBmp
        .hPal = hPal
    End With

    ' Create a picture that will delete it's bitmap when it is finished with it
    Call OleCreatePictureIndirect(tagPic, IPictureIID, 1, IPic)

    ' Return the picture to the caller
    Set PictureFromBitmap = IPic
End Function

Answer 3

LoadPicture它返回一个支持IPictureDisp的对象。它可能不是vbPicTypeBitmap。不确定是否可以在VBA中调用GdipCreateBitmapFromFile。

Answer 4

在Google网上论坛中搜索标题为Convert StdPicture from Icon to Bitmap。

的主题

更新

不，我也无法让它工作。

但是当我尝试它的时候我感觉到了一种可怕的似曾相识的感觉...然后记得我几年前确实这样做过，即在运行时向Excel CommandBarButtons添加带有蒙版的图标，不知道哪个版本的Excel它正在打开。可悲的是我找不到代码（不是源代码控制，所以没有让它发布？我几乎可以肯定我的代码工作了。）

我想我从这些文章中大量借用：

How To Create a Transparent Picture For Office CommandBar Buttons

How To Set the Mask and Picture Properties for Office XP CommandBars

由于Excel没有剪贴板，我似乎记得借用Stephen Bullen的PastePicture.zip。

希望这不会让你在疯狂的追逐中离开：）

如何将stdole.StdPicture转换为其他类型？

4 个答案: