How can show the last snape picture after stopLibe() ???

[webmice]

After stopLive() , I wan to show the last snape picture in the winow ??

[Stefan Geissler]

Hello,

You can find a matching sample in the demoapp sample.

Before you call stopLive() call snapImages() as shown in the CmainFrame::OnPreviewStop() method in Mainframe.cpp.

You can display the snapped image as shown in the CChildView::OnPaint() method in Childview.cpp.

[webmice]

I live the video in Zoom out 480 x 360 when I snap it & show the picture , why the image show as the width of the live image & zoom in as 640 x 480 ?? How Can I fix this problem ????

[Stefan Geissler]

Hello Webmice,

have a look on the function StrecthDIBits() in MSDN to solve your problem.

[webmice]

after modify the code as follow for zoom out

int nLines = StretchDIBits(hDC,// Handle to the device
0, // x-coord of destination upper-left corner
0, // y-coord of destination upper-left corner
480, // width of destination rectangle
360, // height of destination rectangle
0, // x-coord of source upper-left corner
0,// y-coord of source upper-left corner
pInf->biWidth, // Source rectangle width
pInf->biHeight, // Source rectangle height
pBuffer->getPtr(), // Modified address of array with DIB bits0, // First scan line in array
reinterpret_cast<LPBITMAPINFO>( &*pInf ),
DIB_RGB_COLORS,// RGB or palette indices
SRCCOPY
);

the quality of the image is too bad !!!

How can i make it better ??

[Stefan Geissler]

int SetStretchBltMode(
HDC hdc, // handle to device context
int iStretchMode // bitmap stretching mode
);


Call this function before the StretchDIBits().