Qt for HarmonyOS/qtohosextras doc/Native Window ID Example

Native Window ID Example

Demonstrates obtaining the native OHOS window ID of a Qt window.

The main window has a button that creates additional windows. For every window the example calls QtOhosExtras::tryGetNativeWindowId() after the window has been shown and displays the result in the window title, or <invalid> when the returned pointer is null.

 void setWindowTitleToNativeId(QWidget *window)
 {
     auto nativeWindowId = QtOhosExtras::tryGetNativeWindowId(window->windowHandle());
     window->setWindowTitle("ID: " + (nativeWindowId != nullptr ? QString::number(*nativeWindowId) : "<invalid>"));
 }

Note: tryGetNativeWindowId() must only be called after the window has been shown, and the returned ID is not guaranteed to remain valid for the lifetime of the application.

Files:

• nativewindowid/main.cpp
• nativewindowid/nativewindowid.pro