这种事还是用VC吧 DrawDibDraw The DrawDibDraw function draws a DIB to the screen.BOOL DrawDibDraw( HDRAWDIB hdd, HDC hdc, int xDst, int yDst, int dxDst, int dyDst, LPBITMAPINFOHEADER lpbi, LPVOID lpBits, int xSrc, int ySrc, int dxSrc, int dySrc, UINT wFlags );
Parameters hdd Handle of a DrawDib DC. hdc Handle of the DC. xDst and yDst The x- and y-coordinates, in MM_TEXT client coordinates, of the upper left corner of the destination rectangle. dxDst and dyDst Width and height, in MM_TEXT client coordinates, of the destination rectangle. If dxDst is – 1, the width of the bitmap is used. If dyDst is – 1, the height of the bitmap is used. lpbi Address of theBITMAPINFOHEADER structure containing the image format. The color table for the DIB within BITMAPINFOHEADER follows the format and the biHeight member must be a positive value; DrawDibDraw will not draw inverted DIBs. lpBits Address of the buffer that contains the bitmap bits. xSrc and ySrc The x- and y-coordinates, in pixels, of the upper left corner of the source rectangle. The coordinates (0,0) represent the upper left corner of the bitmap. dxSrc and dySrc Width and height, in pixels, of the source rectangle. wFlags Applicable flags for drawing. The following values are defined: DDF_BACKGROUNDPAL Realizes the palette used for drawing in the background, leaving the actual palette used for display unchanged. This value is valid only if DDF_SAME_HDC is not set. DDF_DONTDRAW Current image is decompressed but not drawn. This flag supersedes the DDF_PREROLL flag. DDF_FULLSCREEN Not supported. DDF_HALFTONE Always dithers the DIB to a standard palette regardless of the palette of the DIB. If your application uses the DrawDibBegin function, set this value in DrawDibBegin rather than in DrawDibDraw. DDF_HURRYUP Data does not have to be drawn (that is, it can be dropped) and DDF_UPDATE will not be used to recall this information. DrawDib checks this value only if it is required to build the next frame; otherwise, the value is ignored. This value is usually used to synchronize video and audio. When synchronizing data, applications should send the image with this value in case the driver needs to buffer the frame to decompress subsequent frames. DDF_NOTKEYFRAME DIB data is not a key frame. DDF_SAME_HDC Use the current DC handle and the palette currently associated with the DC. DDF_SAME_DRAW Use the current drawing parameters for DrawDibDraw. Use this value only if lpbi, dxDst, dyDst, dxSrc, and dySrc have not changed since using DrawDibDraw or DrawDibBegin. DrawDibDraw typically checks the parameters, and if they have changed, DrawDibBegin prepares the DrawDib DC for drawing. This flag supersedes the DDF_SAME_DIB and DDF_SAME_SIZE flags. DDF_UPDATE Last buffered bitmap is to be redrawn. If drawing fails with this value, a buffered image is not available and a new image needs to be specified before the display can be updated. Return Values Returns TRUE if successful or FALSE otherwise.Res DDF_DONTDRAW causes DrawDibDraw to decompress but not display an image. A subsequent call to DrawDibDraw specifying DDF_UPDATE displays the image. If the DrawDib DC does not have an off-screen buffer specified, specifying DDF_DONTDRAW causes the frame to be drawn to the screen immediately. Subsequent calls to DrawDibDraw specifying DDF_UPDATE fail. Although they are set at different times, DDF_UPDATE and DDF_DONTDRAW can be used together to create composite images off-screen. When the off-screen image is complete, you can display the image by calling DrawDibDraw.
这个例子我倒是写过,但是我不知道你想怎么画啊~
然后把得到的内存地址传输给DrawDibDraw,然后进行操作,我现在的目的是将其换成本地的BMP文件~~~我后来用CreateDIBSection想得到同样的地址,然后传输给DrawDibDraw,最后输出GIF为文件,但是总是不对~~~不知道我的描述是否明白,很想用GDI+,但是却必须要这样做没有办法啊~~~
谢谢楼上的兄弟帮忙看看啊
谢谢
DrawDibDraw
The DrawDibDraw function draws a DIB to the screen.BOOL DrawDibDraw(
HDRAWDIB hdd,
HDC hdc,
int xDst,
int yDst,
int dxDst,
int dyDst,
LPBITMAPINFOHEADER lpbi,
LPVOID lpBits,
int xSrc,
int ySrc,
int dxSrc,
int dySrc,
UINT wFlags
);
Parameters
hdd
Handle of a DrawDib DC.
hdc
Handle of the DC.
xDst and yDst
The x- and y-coordinates, in MM_TEXT client coordinates, of the upper left corner of the destination rectangle.
dxDst and dyDst
Width and height, in MM_TEXT client coordinates, of the destination rectangle. If dxDst is – 1, the width of the bitmap is used. If dyDst is – 1, the height of the bitmap is used.
lpbi
Address of theBITMAPINFOHEADER structure containing the image format. The color table for the DIB within BITMAPINFOHEADER follows the format and the biHeight member must be a positive value; DrawDibDraw will not draw inverted DIBs.
lpBits
Address of the buffer that contains the bitmap bits.
xSrc and ySrc
The x- and y-coordinates, in pixels, of the upper left corner of the source rectangle. The coordinates (0,0) represent the upper left corner of the bitmap.
dxSrc and dySrc
Width and height, in pixels, of the source rectangle.
wFlags
Applicable flags for drawing. The following values are defined:
DDF_BACKGROUNDPAL
Realizes the palette used for drawing in the background, leaving the actual palette used for display unchanged. This value is valid only if DDF_SAME_HDC is not set.
DDF_DONTDRAW
Current image is decompressed but not drawn. This flag supersedes the DDF_PREROLL flag.
DDF_FULLSCREEN
Not supported.
DDF_HALFTONE
Always dithers the DIB to a standard palette regardless of the palette of the DIB. If your application uses the DrawDibBegin function, set this value in DrawDibBegin rather than in DrawDibDraw.
DDF_HURRYUP
Data does not have to be drawn (that is, it can be dropped) and DDF_UPDATE will not be used to recall this information. DrawDib checks this value only if it is required to build the next frame; otherwise, the value is ignored.
This value is usually used to synchronize video and audio. When synchronizing data, applications should send the image with this value in case the driver needs to buffer the frame to decompress subsequent frames. DDF_NOTKEYFRAME
DIB data is not a key frame.
DDF_SAME_HDC
Use the current DC handle and the palette currently associated with the DC.
DDF_SAME_DRAW
Use the current drawing parameters for DrawDibDraw. Use this value only if lpbi, dxDst, dyDst, dxSrc, and dySrc have not changed since using DrawDibDraw or DrawDibBegin. DrawDibDraw typically checks the parameters, and if they have changed, DrawDibBegin prepares the DrawDib DC for drawing. This flag supersedes the DDF_SAME_DIB and DDF_SAME_SIZE flags.
DDF_UPDATE
Last buffered bitmap is to be redrawn. If drawing fails with this value, a buffered image is not available and a new image needs to be specified before the display can be updated.
Return Values
Returns TRUE if successful or FALSE otherwise.Res
DDF_DONTDRAW causes DrawDibDraw to decompress but not display an image. A subsequent call to DrawDibDraw specifying DDF_UPDATE displays the image. If the DrawDib DC does not have an off-screen buffer specified, specifying DDF_DONTDRAW causes the frame to be drawn to the screen immediately. Subsequent calls to DrawDibDraw specifying DDF_UPDATE fail. Although they are set at different times, DDF_UPDATE and DDF_DONTDRAW can be used together to create composite images off-screen. When the off-screen image is complete, you can display the image by calling DrawDibDraw.
CreateDIBSection是用来建立一幅位图的,然后才能得到它的地址
如果已经有位图,就不是这样做的了