Translucent backdrop in my mainwindow

houmingc

i like to create a transparent backdrop behind my mainwindow, can someone kindly help?

houmingc

I saw the the post on http://doc.qt.digia.com/qq/qq16-background.html
saw the command and windowsopacity

setAttribute(Qt::WA_TranslucentBackground, true);

I am not trying to make the windows transparent, i am trying to make the widgets transparent. Any help, appreciated.

McLion

Are you on Windows? If yes, did you also set @QMainWindow(parent,Qt::FramelessWindowHint)@

You may need to share some more details.

houmingc

can you kindly direct me to any guide?
I am trying to create a background for my mainwindow.

McLion

What exactly is it that you want? Transparent background of main window? Transparent background of widgets? You are talking about different things. What did you try for which target?

houmingc

Sorry for the bad communication.
My purpose is to paste a picture as background on the main window so that it looks more lively.

thought Qt should comes with this features

McLion

Never tried this ... you should be able to add a background image via a StyleSheet. By code or in Designer select StyleSheet on the respective MainWindow (or CentralWidget or .. depends on your ui) and add a resource as background image.

houmingc

I tried adding it inside using "edit Style Sheet" in qt SDK
it feedback nvalid Style Sheet in red
I tried this method before,

andreyc

Could you show a style sheet expression that you were using.

houmingc

I use the below line to set my pushbutton color

ui->pushButton->setStyleSheet("* { background-color: rgb(255,125,100) }");

houmingc

//How to add a picture to mainwindow

below link has the answer
http://stackoverflow.com/questions/4458201/unable-to-set-the-background-image-in-qt-stylesheet#

In the constructor add:
setStyleSheet("background-image:url(:/File/abc.png);");

where under resources, File.qrc /File/and your files.