CV_EXPORTS_W int startWindowThread();
+/** @brief Similar to #waitKey, but returns full key code.
+
+@note
+
+Key code is implementation specific and depends on used backend: QT/GTK/Win32/etc
+
+*/
+CV_EXPORTS_W int waitKeyEx(int delay = 0);
+
/** @brief Waits for a pressed key.
The function waitKey waits for a key event infinitely (when \f$\texttt{delay}\leq 0\f$ ) or for delay
return cvGetWindowProperty(winname.c_str(), prop_id);
}
-int cv::waitKey(int delay)
+int cv::waitKeyEx(int delay)
{
return cvWaitKey(delay);
}
+int cv::waitKey(int delay)
+{
+ int code = waitKeyEx(delay);
+#ifndef HAVE_WINRT
+ static int use_legacy = -1;
+ if (use_legacy < 0)
+ {
+ use_legacy = getenv("OPENCV_LEGACY_WAITKEY") != NULL ? 1 : 0;
+ }
+ if (use_legacy > 0)
+ return code;
+#endif
+ return code & 0xff;
+}
+
int cv::createTrackbar(const String& trackbarName, const String& winName,
int* value, int count, TrackbarCallback callback,
void* userdata)