diff options
Diffstat (limited to 'src/plugins/platforms/ios/qiosintegration.mm')
-rw-r--r-- | src/plugins/platforms/ios/qiosintegration.mm | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/plugins/platforms/ios/qiosintegration.mm b/src/plugins/platforms/ios/qiosintegration.mm index d00d4a077f..fed278bffe 100644 --- a/src/plugins/platforms/ios/qiosintegration.mm +++ b/src/plugins/platforms/ios/qiosintegration.mm @@ -56,6 +56,18 @@ QIOSIntegration::QIOSIntegration() : m_fontDatabase(new QCoreTextFontDatabase) , m_screen(new QIOSScreen(QIOSScreen::MainScreen)) { + if (![UIApplication sharedApplication]) { + qWarning() + << "Error: You are creating QApplication before calling UIApplicationMain.\n" + << "If you are writing a native iOS application, and only want to use Qt for\n" + << "parts of the application, a good place to create QApplication is from within\n" + << "'applicationDidFinishLaunching' inside your UIApplication delegate.\n" + << "If you instead create a cross-platform Qt application and do not intend to call\n" + << "UIApplicationMain, you need to link in libqtmain.a, and substitute main with qt_main.\n" + << "This is normally done automatically by qmake.\n"; + exit(-1); + } + screenAdded(m_screen); } |