transparence of Color in qt3???

[Stephano]

hello ,

Can i define the transparence of color with Qt3.4?
I mean that qt 4 define QRgba.

thanks

[zlatko]

Hm...qRgba available in Qt3..what you want to do?

[Stephano]

QColor *couleur=new QColor( qRgba ( 255,0,0,0 ) , 0xffffffff ) ;
tab_text[text_actif]->setPaletteBackgroundColor(*couleur);

but, what value of "a" in the expression (BOLD) make the text transparent?

[Stephano]

When i define QRgba with 'a'=0,
the color will nt be transparent..
So, please,what 's the problem?

Thanks to all!!!!!!!!!!

[bits]

I think alpha in QColor is just to be used with qglColor() only. (When you use QGLWidget for OpenGL)

From the QT docs:
---------------------------
QGLWidget::qglColor ( const QColor & c ) const
Convenience function for specifying a drawing color to OpenGL. Calls glColor3 (in RGBA mode) or glIndex (in color-index mode) with the color c. Applies to the current GL context.