private void installMouseHook() {
if (mouseCallback == null) {
mouseCallback = new Callback(this, "MouseProc", 3);
newAddress = mouseCallback.getAddress();
if (newAddress == 0) SWT.error(SWT.ERROR_NO_MORE_CALLBACKS);
int threadId = Extension.GetCurrentThreadId();
oldAddress = Extension.SetWindowsHookEx(Win32.WH_MOUSE, newAddress, 0, threadId);
shell.addDisposeListener(
new DisposeListener() {
public void widgetDisposed(DisposeEvent e) {
if (mouseCallback != null) {
Extension.UnhookWindowsHookEx(oldAddress);
mouseCallback.dispose();
mouseCallback = null;
newAddress = 0;
}
}
});
}
}
