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绘图数据

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[与此页面关联的功能 视频压缩管理器是一项旧功能。 Microsoft 强烈建议新代码不使用此功能。]

以下示例使用 ICDraw 函数和 ICDrawStart、 ICDrawStop、 ICDrawFlush 和 ICDrawEnd 宏在屏幕上绘制数据。

DWORD    dwNumBuffers; 
 
// Find out how many buffers need filling before drawing starts.

ICGetBuffersWanted(hIC, &dwNumBuffers); 
for (dw = 0; dw < dwNumBuffers; dw++)
{ 
    ICDraw(hIC, 0, lpFormat, lpData, cbData, dw); // fill the pipeline
    
    // Point lpFormat and lpData to next format and buffer.
    
} 
ICDrawStart(hIC);  // starts the clock 
dw = 0; 
while (fPlaying) 
{ 
    ICDraw(hIC, 0, lpFormat, lpData, chData, dw); // fill more buffers 
    
    // Point lpFormat and lpData to next format and buffer,
    // update dw.
} 
 
ICDrawStop(hIC);   // stops drawing and decompressing when done 
ICDrawFlush(hIC);  // flushes any existing buffers 
ICDrawEnd(hIC);    // ends decompression