如果我們想把word中的圖片保存下來，苦惱word無法使用右鍵圖片另存為，接下來小編就為大家介紹一下如何使用VBA代碼增加圖片另存為代碼如下：

Option Explicit

Private Const UnitPixel As Long = 2 Private Const EncoderQuality As String = '{1D5BE4B5-FA4A-452D-9CDD-5DB35105E7EB}'

Private Type GdiplusStartupInput GdiplusVersion As Long DebugEventCallback As Long SuppressBackgroundThread As Long SuppressExternalCodecs As Long End Type

Private Enum EncoderParameterValueType EncoderParameterValueTypeByte = 1 EncoderParameterValueTypeASCII = 2 EncoderParameterValueTypeShort = 3 EncoderParameterValueTypeLong = 4 EncoderParameterValueTypeRational = 5 EncoderParameterValueTypeLongRange = 6 EncoderParameterValueTypeUndefined = 7 EncoderParameterValueTypeRationalRange = 8 End Enum

Private Type EncoderParameter GUID(0 To 3) As Long NumberOfValues As Long Type As EncoderParameterValueType Value As Long End Type

Private Type EncoderParameters Count As Long Parameter As EncoderParameter End Type

Private Type ImageCodecInfo ClassID(0 To 3) As Long FormatID(0 To 3) As Long CodecName As Long DllName As Long FormatDescription As Long FilenameExtension As Long MimeType As Long Flags As Long Version As Long SigCount As Long SigSize As Long SigPattern As Long SigMask As Long End Type

Private Declare Function GdiplusStartup Lib 'gdiplus' (Token As Long, inputbuf As GdiplusStartupInput, Optional ByVal outputbuf As Long = 0) As Long Private Declare Sub GdiplusShutdown Lib 'gdiplus' (ByVal Token As Long) Private Declare Function GdipSaveImageToFile Lib 'gdiplus' (ByVal hImage As Long, ByVal sFilename As Long, clsidEncoder As Any, encoderParams As Any) As Long Private Declare Function GdipDisposeImage Lib 'gdiplus' (ByVal Image As Long) As Long Private Declare Function GdipCreateBitmapFromHBITMAP Lib 'gdiplus' (ByVal hbm As Long, ByVal hPal As Long, Bitmap As Long) As Long Private Declare Function GdipGetImageEncodersSize Lib 'gdiplus' (numEncoders As Long, Size As Long) As Long Private Declare Function GdipGetImageEncoders Lib 'gdiplus' (ByVal numEncoders As Long, ByVal Size As Long, Encoders As Any) As Long

Private Declare Sub CopyMemory Lib 'kernel32' Alias 'RtlMoveMemory' (Destination As Any, Source As Any, ByVal Length As Long) Private Declare Function lstrlenW Lib 'kernel32' (ByVal psString As Any) As Long Private Declare Function CLSIDFromString Lib 'ole32' (ByVal lpszProgID As Long, pCLSID As Any) As Long Private Declare Function GdipBitmapSetResolution Lib 'gdiplus' (ByVal Bitmap As Long, ByVal xdpi As Single, ByVal ydpi As Single) As Long

Public Enum ImageFileFormat Bmp = 1 Jpg = 2 Png = 3 Gif = 4 End Enum

Public Function SaveStdPicToFile(Stdpic As StdPicture, ByVal FileName As String, _ Optional ByVal FileFormat As ImageFileFormat = Jpg, _ Optional ByVal JpgQuality As Long = 80, _ Optional Resolution As Single) As Boolean

Dim CLSID(3) As Long Dim Bitmap As Long Dim Token As Long Dim Gsp As GdiplusStartupInput

Gsp.GdiplusVersion = 1’GDI+ 1.0版本 GdiplusStartup Token, Gsp ’初始化GDI+ GdipCreateBitmapFromHBITMAP Stdpic.Handle, Stdpic.hPal, Bitmap If Bitmap <> 0 Then’說明我們成功的將StdPic對象轉換為GDI+的Bitmap對象了 GdipBitmapSetResolution Bitmap, Resolution, Resolution Select Case FileFormat Case ImageFileFormat.BmpIf Not GetEncoderClsID('Image/bmp', CLSID) = -1 Then SaveStdPicToFile = (GdipSaveImageToFile(Bitmap, StrPtr(FileName), CLSID(0), ByVal 0) = 0)End If Case ImageFileFormat.Jpg ’JPG格式可以設置保存的質量Dim aEncParams() As ByteDim uEncParams As EncoderParametersIf GetEncoderClsID('Image/jpeg', CLSID) <> -1 Then uEncParams.Count = 1 ’ 設置自定義的編碼參數，這里為1個參數 If JpgQuality < 0 Then JpgQuality = 0 ElseIf JpgQuality > 100 Then JpgQuality = 100 End If ReDim aEncParams(1 To Len(uEncParams)) With uEncParams.Parameter .NumberOfValues = 1 .Type = EncoderParameterValueTypeLong ’ 設置參數值的數據類型為長整型 Call CLSIDFromString(StrPtr(EncoderQuality), .GUID(0))’ 設置參數唯一標志的GUID，這里為編碼品質 .Value = VarPtr(JpgQuality) ’ 設置參數的值：品質等級，最高為100，圖像文件大小與品質成正比 End With CopyMemory aEncParams(1), uEncParams, Len(uEncParams) SaveStdPicToFile = (GdipSaveImageToFile(Bitmap, StrPtr(FileName), CLSID(0), aEncParams(1)) = 0)End If Case ImageFileFormat.PngIf Not GetEncoderClsID('Image/png', CLSID) = -1 Then SaveStdPicToFile = (GdipSaveImageToFile(Bitmap, StrPtr(FileName), CLSID(0), ByVal 0) = 0)End If Case ImageFileFormat.GifIf Not GetEncoderClsID('Image/gif', CLSID) = -1 Then ’如果原始的圖像是24位，則這個函數會調用系統的調色板來將圖像轉換為8位，轉換的效果會不盡人意,但也有可能系統不自動轉換，保存失敗 SaveStdPicToFile = (GdipSaveImageToFile(Bitmap, StrPtr(FileName), CLSID(0), ByVal 0) = 0)End If End Select End If GdipDisposeImage Bitmap ’注意釋放資源 GdiplusShutdown Token ’關閉GDI+。 End Function

Private Function GetEncoderClsID(strMimeType As String, ClassID() As Long) As Long Dim Num As Long Dim Size As Long Dim I As Long Dim Info() As ImageCodecInfo Dim Buffer() As Byte GetEncoderClsID = -1 GdipGetImageEncodersSize Num, Size ’得到解碼器數組的大小 If Size <> 0 Then ReDim Info(1 To Num) As ImageCodecInfo ’給數組動態分配內存 ReDim Buffer(1 To Size) As Byte GdipGetImageEncoders Num, Size, Buffer(1) ’得到數組和字符數據 CopyMemory Info(1), Buffer(1), (Len(Info(1)) * Num) ’復制類頭 For I = 1 To Num ’循環檢測所有解碼 If (StrComp(PtrToStrW(Info(I).MimeType), strMimeType, vbTextCompare) = 0) Then ’必須把指針轉換成可用的字符 CopyMemory ClassID(0), Info(I).ClassID(0), 16’保存類的ID GetEncoderClsID = I ’返回成功的索引值 Exit For End If Next End If End Function

Private Function PtrToStrW(ByVal lpsz As Long) As String Dim Out As String Dim Length As Long Length = lstrlenW(lpsz) If Length > 0 Then Out = StrConv(String$(Length, vbNullChar), vbUnicode) CopyMemory ByVal Out, ByVal lpsz, Length * 2 PtrToStrW = StrConv(Out, vbFromUnicode) End If End FunctionFor Each cbn In Array('AutoText', 'Drawing Canvas', 'Organization Chart', 'Diagram', 'Frames', 'Flowchart', 'Inline Picture', 'Floating Picture', 'Shapes', 'Inline Canvas', 'Table Pictures', 'AutoShapes', 'Basic Shapes', 'Insert Shape', 'Picture', 'WordArt Context Menu', 'WordArt')