Assign a callback function to be notified when the page requests for the containing window to be moved to a certain location on the screen.
@param webview The WebView instance.
@param callback A function pointer to the callback.
See Implementation
Assign a callback function to be notified when the page requests for the containing window to be moved to a certain location on the screen.
@param webview The WebView instance.
@param callback A function pointer to the callback.