SaveStdPicToFile = (GdipSaveImageToFile(Bitmap, StrPtr(FileName), CLSID(0), ByVal 0) = 0)
End If
Case ImageFileFormat.Jpg'JPG格式可以设置保存的质量
Dim aEncParams()As Byte
Dim uEncParamsAs EncoderParameters
If GetEncoderClsID("Image/jpeg", CLSID) <> -1 Then
uEncParams.Count = 1' 设置自定义的编码参数,这里为1个参数
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' 设置参数值的数据类型为长整型
Call CLSIDFromString(StrPtr(EncoderQuality), .GUID(0))' 设置参数唯一标志的GUID,这里为编码品质
.Value = http://www.ljsggw.cn/office/VarPtr(JpgQuality)' 设置参数的值:品质等级,最高为100,图像文件大小与品质成正比
End With
CopyMemory aEncParams(1), uEncParams, Len(uEncParams)
SaveStdPicToFile = (GdipSaveImageToFile(Bitmap, StrPtr(FileName), CLSID(0), aEncParams(1)) = 0)
End If
Case ImageFileFormat.Png
If Not GetEncoderClsID("Image/png", CLSID) = -1 Then
SaveStdPicToFile = (GdipSaveImageToFile(Bitmap, StrPtr(FileName), CLSID(0), ByVal 0) = 0)
End If
Case ImageFileFormat.Gif
If Not GetEncoderClsID("Image/gif", CLSID) = -1 Then'如果原始的图像是24位,则这个函数会调用系统的调色板来将图像转换为8位,转换的效果会不尽人意,但也有可能系统不自动转换,保存失败
SaveStdPicToFile = (GdipSaveImageToFile(Bitmap, StrPtr(FileName), CLSID(0), ByVal 0) = 0)
End If
End Select
End If
GdipDisposeImage Bitmap'注意释放资源
GdiplusShutdown Token'关闭GDI+ 。
End Function
Private Function GetEncoderClsID(strMimeType As String, ClassID() As Long) As Long
Dim NumAs Long
Dim SizeAs Long
Dim IAs Long
Dim Info()As ImageCodecInfo
Dim Buffer()As Byte
GetEncoderClsID = -1
GdipGetImageEncodersSize Num, Size'得到解码器数组的大小
If Size <> 0 Then
ReDim Info(1 To Num) As ImageCodecInfo'给数组动态分配内存
ReDim Buffer(1 To Size) As Byte
GdipGetImageEncoders Num, Size, Buffer(1)'得到数组和字符数据
CopyMemory Info(1), Buffer(1), (Len(Info(1)) * Num) '复制类头
For I = 1 To Num'循环检测所有解码
If (StrComp(PtrToStrW(Info(I).MimeType), strMimeType, vbTextCompare) = 0) Then'必须把指针转换成可用的字符
CopyMemory ClassID(0), Info(I).ClassID(0), 16'保存类的ID
GetEncoderClsID = I'返回成功的索引值
Exit For
End If
Next
End If
End Function
【word图片点击右键没有另存为 word右键怎么增加图片另存为】Private Function PtrToStrW(ByVal lpsz As Long) As String
Dim OutAs String
Dim LengthAs 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 Function
For 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")
推荐阅读
- word怎么制作epub Word怎么制作目录
- 文档变蓝色之后怎么消除 word2003文档整版变成蓝色怎样去掉
- word批注看不到怎么办 为什么word无法显示批注
- word占用内存过高 word很占CPU吗
- 如何实现word整页都是下划线的 如何实现WORD整页都是下划线
- 当word文档两个窗口并排时,如何移动一个窗口而使得另外一个窗口不跟着移动
- word怎么删除对号 WORD可以批量删除错号和对号吗
- Word2003背景改成自定义图片怎样修改其大小
- Word 2007无法输入中文怎么办
- word2010怎么制作三线表格 word文档如何制作三线表格