用VC如何得到视频文件如avi、asf中视频的宽和高？

[java_hero]

谢谢

[milozy1983]

http://www.yesky.com/20011022/201706.shtml

[vcmute]

AVI用AVIStreamReadFormat得到VIDEOINFOHEADER
ASF的可看一下MPlayer代码的asf_demuxer代码，具体也可用Media Format SDK

[vcmute]

如果用DirectShow更简单，RenderFile之后得到Pin的MediaType
P.S.ASF可以但AVI不能只加AddSourceFilter

[java_hero]

up...

[VCSQLVB]

IVideoWindow接口可以得到，
if (mVideoWindow)
{
mVideoWindow->put_Visible(OAFALSE);
mVideoWindow->put_Owner((OAHWND)inWindow);

RECT windowRect;
::GetClientRect(inWindow, &windowRect);
mVideoWindow->put_Left(0);
mVideoWindow->put_Top(0);
mVideoWindow->put_Width(windowRect.right - windowRect.left);
mVideoWindow->put_Height(windowRect.bottom - windowRect.top);
mVideoWindow->put_WindowStyle(WS_CHILD|WS_CLIPCHILDREN|WS_CLIPSIBLINGS);

mVideoWindow->put_MessageDrain((OAHWND) inWindow);

if (inWindow != NULL)
{
mVideoWindow->put_Visible(OATRUE);
}
else
{
mVideoWindow->put_Visible(OAFALSE);
}
return true;
}