[SWFKit]

Sorry, the parameters for the captureScreen method were not correct. The correct code should be

var img = Image.captureScreen(l, t, r, b);

About the splash window, you can add some code to prevent the main window from displaying before the splash has been closed:

var splash = new SplashWnd(570, 330);
var stop = false;
splash.onTimeout = function () {
	stop = true;
}

splash.loadSWF(getAdditionalFile("splash.swf"));
splash.timeout = 5000;
splash.window.center();
splash.window.show();

while (!stop) {
	if (!processMsg()) break;
}