易语言PNG到JPG转换源码

系统结构:到JPG,A2W,GdiplusStartup,GdiplusShutdown,MultiByteToWideChar,GdipLoadImageFromFile,GdipSaveImageToFile,CLSIDFromString,GdipDisposeImage,CreateStreamOnHGlobal,GetHGlobalFromStream,GlobalLock,GlobalSize,GlobalUnlock,GlobalAlloc,GetObjectPtr,GdipCreateBitmapFromStream,GlobalFree,CreateStreamOnHGlobal_int,GdipSaveImageToStream_int,GetHGlobalFromStream_int,GdipSaveImageToStream,CopyMemory,GdipCreateHBITMAPFromBitmap,GdipCreateBitmapFromHBITMAP,

======程序集1
           |  |
           |  |------ _启动子程序
           |  |
           |  |------ 到JPG
           |  |
           |  |------ A2W
           |  |
           |  |
======调用的Dll
           |  |
           |  |---[dll]------   GdiplusStartup
           |  |
           |  |---[dll]------   GdiplusShutdown
           |  |
           |  |---[dll]------   MultiByteToWideChar
           |  |
           |  |---[dll]------   GdipLoadImageFromFile
           |  |
           |  |---[dll]------   GdipSaveImageToFile
           |  |
           |  |---[dll]------   CLSIDFromString
           |  |
           |  |---[dll]------   GdipDisposeImage
           |  |
           |  |---[dll]------   CreateStreamOnHGlobal
           |  |
           |  |---[dll]------   GetHGlobalFromStream
           |  |
           |  |---[dll]------   GlobalLock
           |  |
           |  |---[dll]------   GlobalSize
           |  |
           |  |---[dll]------   GlobalUnlock
           |  |
           |  |---[dll]------   GlobalAlloc
           |  |
           |  |---[dll]------   GetObjectPtr
           |  |
           |  |---[dll]------   GdipCreateBitmapFromStream
           |  |
           |  |---[dll]------   GlobalFree
           |  |
           |  |---[dll]------   CreateStreamOnHGlobal_int
           |  |
           |  |---[dll]------   GdipSaveImageToStream_int
           |  |
           |  |---[dll]------   GetHGlobalFromStream_int
           |  |
           |  |---[dll]------   GdipSaveImageToStream
           |  |
           |  |---[dll]------   CopyMemory
           |  |
           |  |---[dll]------   GdipCreateHBITMAPFromBitmap
           |  |
           |  |---[dll]------   GdipCreateBitmapFromHBITMAP

调用的DLL命令:

.DLL命令 GdiplusStartup, 整数型, "gdiplus.dll", "GdiplusStartup"
    .参数 token, 整数型, 传址
    .参数 inputbuf, GdiplusStartupInput
    .参数 outputbuf, 整数型

.DLL命令 GdiplusShutdown, , "gdiplus.dll", "GdiplusShutdown"
    .参数 token, 整数型

.DLL命令 MultiByteToWideChar, 整数型, , "MultiByteToWideChar"
    .参数 CodePage, 整数型
    .参数 dwFlags, 整数型
    .参数 lpMultiByteStr, 文本型
    .参数 cchMultiByte, 整数型
    .参数 lpWideCharStr, 字节集
    .参数 cchWideChar, 整数型

.DLL命令 GdipLoadImageFromFile, 整数型, "gdiplus.dll", "GdipLoadImageFromFile"
    .参数 filename, 字节集
    .参数 image, 整数型, 传址

.DLL命令 GdipSaveImageToFile, 整数型, "gdiplus.dll", "GdipSaveImageToFile"
    .参数 image
    .参数 filename, 字节集
    .参数 clsidEncoder, 字节集
    .参数 encoderParams, 整数型

.DLL命令 CLSIDFromString, , "ole32.dll", "CLSIDFromString"
    .参数 lpsz, 字节集
    .参数 pclsid, 字节集, 传址

.DLL命令 GdipDisposeImage, 整数型, "gdiplus.dll", "GdipDisposeImage"
    .参数 image, 整数型

.DLL命令 CreateStreamOnHGlobal, 整数型, "ole32.dll", "CreateStreamOnHGlobal"
    .参数 hGlobal
    .参数 fDeleteOnRelease, 逻辑型
    .参数 ppstm, 对象, 传址

.DLL命令 GetHGlobalFromStream, , "ole32.dll", "GetHGlobalFromStream"
    .参数 pstm, 对象, , 未知类型：ISTREAM。
    .参数 phglobal, 整数型, 传址

.DLL命令 GlobalLock, 整数型
    .参数 hMem, 整数型

.DLL命令 GlobalSize, 整数型
    .参数 hMem, 整数型

.DLL命令 GlobalUnlock, 逻辑型
    .参数 hMem, 整数型

.DLL命令 GlobalAlloc, 整数型, , "GlobalAlloc"
    .参数 uFlags
    .参数 dwBytes

.DLL命令 GetObjectPtr, 整数型, , "lstrcpyn"
    .参数 lpString1, 对象, 传址
    .参数 lpString2, 对象, 传址
    .参数 iMaxLength, 整数型

.DLL命令 GdipCreateBitmapFromStream, 整数型, "gdiplus.dll", "GdipCreateBitmapFromStream"
    .参数 stream, 整数型
    .参数 bitmap, , 传址

.DLL命令 GlobalFree, 整数型, , "GlobalFree"
    .参数 hMem

.DLL命令 CreateStreamOnHGlobal_int, 整数型, "ole32.dll", "CreateStreamOnHGlobal"
    .参数 hGlobal
    .参数 fDeleteOnRelease, 逻辑型
    .参数 ppstm, , 传址

.DLL命令 GdipSaveImageToStream_int, 整数型, "gdiplus.dll", "GdipSaveImageToStream"
    .参数 image
    .参数 stream
    .参数 clsidEncoder, 字节集
    .参数 encoderParams

.DLL命令 GetHGlobalFromStream_int, , "ole32.dll", "GetHGlobalFromStream"
    .参数 pstm, , , 未知类型：ISTREAM。
    .参数 phglobal, 整数型, 传址

.DLL命令 GdipSaveImageToStream, 整数型, "gdiplus.dll", "GdipSaveImageToStream"
    .参数 image
    .参数 stream, 对象
    .参数 clsidEncoder, 字节集
    .参数 encoderParams

.DLL命令 CopyMemory, , , "RtlMoveMemory"
    .参数 Destination, 字节集
    .参数 Source, 整数型
    .参数 cbCopy, 整数型

.DLL命令 GdipCreateHBITMAPFromBitmap, 整数型, "gdiplus", "GdipCreateHBITMAPFromBitmap"
    .参数 bitmap, 整数型
    .参数 hbmReturn, 整数型, 传址
    .参数 background, 整数型

.DLL命令 GdipCreateBitmapFromHBITMAP, 整数型, "gdiplus", "GdipCreateBitmapFromHBITMAP"
    .参数 hbm, 整数型
    .参数 hpal, 整数型
    .参数 bitmap, 整数型, 传址