Qt for HarmonyOS/qtohosextras doc/Native Window ID Example: Difference between revisions
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< [[Qt_for_HarmonyOS/qtohosextras_doc|Qt for HarmonyOS / qtohosextras doc]] | |||
= Native Window ID Example = | = Native Window ID Example = | ||
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'''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. | '''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. | ||
* [[Qt_for_HarmonyOS/qtohosextras_doc/ | Files: | ||
* [[Qt_for_HarmonyOS/qtohosextras_doc/Native_Window_ID_Example_-_main.cpp|nativewindowid/main.cpp]] | |||
* [[Qt_for_HarmonyOS/qtohosextras_doc/Native_Window_ID_Example_-_nativewindowid.pro|nativewindowid/nativewindowid.pro]] | |||
[[Category:Qt for HarmonyOS]] | [[Category:Qt for HarmonyOS]] | ||
Revision as of 02:40, 17 September 2026
< Qt for HarmonyOS / qtohosextras doc
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: