qt - QWidget::showMinimized() doesn't work -

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on ubuntu 13.04, if using qwidget::showminimized() minimize window, found after restoring clicking app icon system taskbar, recalling qwidget::showminimized() cannot work.

connect(minimumbtn,signal(clicked()),this,slot(minimumwin())); minimumwin(){    showminimized(); }

showminimized() in minimumwin() doesn't work anymore if has been called before (even window showed).

i can reproduce linux mint , qt 5.1. bug in qt. found if call shownormal() right after showminimized(), window minimizes , after restored taskbar, possible minimize window again. example:

void mainwindow::on_pushbutton_clicked() {     showminimized();     shownormal(); }

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