Qt: Fix window focus issues

CHANGES

@@ -8,6 +8,7 @@ Bugfixes:
  - GBA Memory: Don't call into GPIO write calls if GPIO devices are absent
  - GBA BIOS: Fix BIOS prefetch after returning from a SWI
  - Debugger: Negative PC-relative loads now properly subtract the offset
+ - Qt: Fix window focus issues
 Misc:
  - Qt: Disable sync to video by default
  - GBA: Exit cleanly on FATAL if the port supports it

src/platform/qt/Window.cpp

@@ -46,6 +46,7 @@ Window::Window(ConfigController* config, QWidget* parent)
 #endif
 {
 	setWindowTitle(PROJECT_NAME);
+	setFocusPolicy(Qt::StrongFocus);
 	m_controller = new GameController(this);
 	m_controller->setInputController(&m_inputController);