Fixed cvDestroyAllWindows() without windows in QT (#2440)

12 years ago · 3c8787980c
parent 56fbcc541f
commit 3c8787980c
1 changed files with 1 additions and 1 deletions
--- a/modules/highgui/src/window_QT.cpp
+++ b/modules/highgui/src/window_QT.cpp
@ -499,7 +499,7 @@ CV_IMPL void cvDestroyWindow(const char* name)
 CV_IMPL void cvDestroyAllWindows()
 {
    if (!guiMainThread)
-        CV_Error( CV_StsNullPtr, "NULL guiReceiver (please create a window)" );
+        return;

    QMetaObject::invokeMethod(guiMainThread,
        "destroyAllWindow",