How to display a splash screen in Qt

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Overview[edit | edit source]

Template:Abstract.

A splash screen is a widget that is usually displayed when an application is being started. Splash screens are often used for applications that have long start up times (e.g. database or networking applications that take time to establish connections) to provide the user with feedback that the application is loading. The splash screen may usually appear in the center of the screen.

Preconditions[edit | edit source]

  • Download and install the Qt SDK

Various Function[edit | edit source]

  • Makes the splash screen wait until the widget mainWin is displayed
 splash.finish(&window);
  • Draws the message text onto the splash screen with color and aligns the text according to the flags in alignment
splash.showMessage("Wait...");

Source File[edit | edit source]

  1. include <QApplication>
  2. include <QPixmap>
  3. include <QSplashScreen>
  4. include <QWidget>
  5. include <QMainWindow>

int main(int argc, char *argv[]) {

    QApplication app(argc, argv);
    QPixmap pixmap("c://designer.png");
    QSplashScreen splash(pixmap);
    splash.show();
    splash.showMessage("Wait...");
    qApp->processEvents();//This is used to accept a click on the screen so that user can cancel the screen
         
    QMainWindow window;
    window.setStyleSheet("* { background-color:rgb(199,147,88); padding: 7px}");
    	
    window.show();
    splash.finish(&window);
    return app.exec();

}

Screenshot[edit | edit source]

File:Splash1.JPG


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pt:Archived:Como mostrar uma tela de início, em Qt