Qt: fixed keyPressEvent (ticket #803)

modules/highgui/CMakeLists.txt

@@ -110,7 +110,7 @@ if (HAVE_QT)
     SET(_MOC_HEADERS src/window_QT.h )
     QT4_WRAP_CPP(_MOC_OUTFILES ${_MOC_HEADERS})
      
-    set(HIGHGUI_LIBRARIES ${HIGHGUI_LIBRARIES} ${QT_LIBRARIES})
+    set(HIGHGUI_LIBRARIES ${HIGHGUI_LIBRARIES} ${QT_LIBRARIES} ${QT_QTTEST_LIBRARY})
     set(highgui_srcs ${highgui_srcs} src/window_QT.cpp ${_MOC_OUTFILES} ${_RCC_OUTFILES} )
 endif()
     

modules/highgui/src/window_QT.cpp

@@ -1869,18 +1869,14 @@ void CvWindow::keyPressEvent(QKeyEvent *event)
 {
 	//see http://doc.trolltech.com/4.6/qt.html#Key-enum
 	int key = event->key();
-	bool goodKey = false;
+	//bool goodKey = false;
+	bool goodKey = true;
 
-	if (key>=20 && key<=255 )
+	Qt::Key qtkey = static_cast<Qt::Key>(key);
+	char asciiCode = QTest::keyToAscii(qtkey);
+	if(asciiCode != 0)
 	{
-		key = (int)event->text().toLocal8Bit().at(0);
-		goodKey = true;
-	}
-
-	if (key == Qt::Key_Escape)
-	{
-		key = 27;
-		goodKey = true;
+		key = static_cast<int>(asciiCode);
 	}
 
 	//control plus (Z, +, -, up, down, left, right) are used for zoom/panning functions

modules/highgui/src/window_QT.h

@@ -79,6 +79,7 @@
 #include <QRadioButton>
 #include <QButtonGroup>
 #include <QMenu>
+#include <QtTest/QTest>
 
 //start private enum
 enum {CV_MODE_NORMAL= 0, CV_MODE_OPENGL = 1};