QPushButton and mouse

[lixo1]

Hi everybody,
I'm absolutely a Qt4 newbie.
I have the following problem: I have a QPushButton, with a icon image (iconSize: 90x90px) I would like to associate another icon image when I pass the mouse over this button, without clicking.
I tried with style sheet but it doesn't works (in the designer it works but the image is not in 90x90px, but in the application it not works). I tried that but nothing:

QPushButton: hover { 
    background-image: url("mypicturefromresources.png");
    background-position: center;
    width: 90px;
    height: 90px;
}

QPushButton: hover { 
    background-image: url("mypicturefromresources.png");
    background-position: center;
    width: 90px;
    height: 90px;
}

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Is there another suggestion to do it in a easy way?
Thank you very much.

[radek.z]

Hi,

if I undesrtood you correctly then reimplement the void QWidget::mouseMoveEvent ( QMouseEvent * event ) shoudl help you.

Radek

[drhex]

Or perhaps better QWidget::enterEvent

[wysota]

You are setting the push button to be 90x90 which will probably not happen if it is inside a layout. The icon doesn't occupy the whole area of the button (for instance there are margins involved).

By the way, check out the "Common mistakes" section of Qt Style Sheets reference.

[lixo1]

Hi everyboy,
First of all thank you very much for all helps.
I think that the best way is overriting the mouseMoveEvent or maybe the enterEvent, but I'm substancially new, so I tried that:

void MyMainWindow::enterEvent(QEvent *){ //it will overrite the default enterEvent
  //for example
ui->pushbutton_calculate->setIcon(QIcon("...my icon"));
 
}

void MyMainWindow::enterEvent(QEvent *){ //it will overrite the default enterEvent
  //for example
ui->pushbutton_calculate->setIcon(QIcon("...my icon"));

}

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This example will works everytime I pass the mouse over my MainWindow, so, how to determine if the mouse is over my pushbutton_calculate?
What I have to do?
Thank you another time.

[greenvirag]

It's because you didn't tell the program, that this event is for your pushbutton. Recently I made something similar in my program, but I used QGraphicsview, and HoverEvent.

I don't find this event at QPushButton.

Maybe you should do: write over the enterEvent(QEvent* event) of your pushbutton with explicit conversation to QHoverEvent*. To do this, you must make a subclass of QPushButton.

[lixo1]

Hi everybody,
So thank you very much, for yours opinions and explanations, now I really understand the Qt mechanism!
Cheers.