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c++qtmouse-cursor

Change cursor to hourglass/wait/busy cursor and back in Qt

I spawn a process that performs a lengthy operation, and I'd like to give visual feedback that something is happening, so I want to change the cursor to busy and restore it when I receive the QProcess::finished signal.

Solution

  • Qsiris solution is "widget wide". If you want to change cursor for your whole application then use 

    QApplication::setOverrideCursor(Qt::WaitCursor);

    and

    QApplication::restoreOverrideCursor();

    Note: As @Ehsan Khodarahmi pointed out, the cursor will NOT change until triggering next QT event or calling QApplication::processEvents() manually.