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Merge pull request #11714 from alalek:win32_waitKey_accuracy

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This commit is contained in:
Alexander Alekhin 2018-06-09 12:10:24 +00:00
commit 34fc8e9260
1 changed files with 5 additions and 4 deletions
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9
modules/highgui/src/window_w32.cpp
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@ -1965,7 +1965,8 @@ static void showSaveDialog(CvWindow* window)
CV_IMPL int
cvWaitKey( int delay )
{
int time0 = GetTickCount();
int64 time0 = cv::getTickCount();
int64 timeEnd = time0 + (int64)(delay * 0.001f * cv::getTickFrequency());
for(;;)
{
@ -1973,13 +1974,13 @@ cvWaitKey( int delay )
MSG message;
int is_processed = 0;
if( (delay > 0 && abs((int)(GetTickCount() - time0)) >= delay) || hg_windows == 0 )
return -1;
if( delay <= 0 )
GetMessage(&message, 0, 0, 0);
else if( PeekMessage(&message, 0, 0, 0, PM_REMOVE) == FALSE )
{
int64 t = cv::getTickCount();
if (t - timeEnd >= 0)
return -1; // no messages and no more time
Sleep(1);
continue;
}