i am new... please help

[Slewman]

I am trying to make a simple RGB value setter with some Spin Boxes and Vertical Scrolls... but i want it to be more interactive than just that. I want there to be a color box... or something that's actual color value (R,G,B) will change with the changes from the vertical scrolls... how can i do this? Again I am very very new at this stuff so please, any help is greatly appreciated. Basically, Im looking for something to set the color of a form or whatever that can call a "getValue" or something similar from the spin box or scroll

thanks again.

also, to take this one step further... is there a way, in QT designer, to create a window or widget, and, while in the designer, look at the actual code that is being created and edit it?

[Lykurg]

I am trying to make a simple RGB value setter with some Spin Boxes and Vertical Scrolls... but i want it to be more interactive than just that. I want there to be a color box... or something that's actual color value (R,G,B) will change with the changes from the vertical scrolls... how can i do this? Again I am very very new at this stuff so please, any help is greatly appreciated. Basically, Im looking for something to set the color of a form or whatever that can call a "getValue" or something similar from the spin box or scroll

• learn basic C++
• have a look at the signal slot mechanism of Qt

thanks again.

also, to take this one step further... is there a way, in QT designer, to create a window or widget, and, while in the designer, look at the actual code that is being created and edit it?

No, the c++-code is created via uic. so you can't see the code inside the designer. The designer is only for GUI modeling, not for coding.

[Slewman]

Its not that I dont know c++, i do, Im trying to do this in the QT Designer before i try to do this simply by programming it. i know there is a function in the spinBox class "int value()" that will return the value in the spinBox, is there anyway to set a background color corresponding to that value?

i treid addying a style sheet and using spinBox->value() but its not giving me any result. any suggestions?

[Lykurg]

you can't do it in the designer. because there is no slot called setRValue() or setGValue() for any widget.

So you have to manipulate the palette of your "color-widget" by your own. Or write your own widget, providing these slots and write a designer plugin for that color-widget.

connect(slider1, SIGNAL(valueChanged(int)), this, slider1changed(int));
//...
...::slider1changed(int i)
{
  QPalette p = colorwidget->palette();
  QColor c = p.color(QPalette::Window);
  c.setRed(i);
  p.setColor(QPalette::Window, c);
  colorwidget->setPalette(p);
}

connect(slider1, SIGNAL(valueChanged(int)), this, slider1changed(int));
//...
...::slider1changed(int i)
{
  QPalette p = colorwidget->palette();
  QColor c = p.color(QPalette::Window);
  c.setRed(i);
  p.setColor(QPalette::Window, c);
  colorwidget->setPalette(p);
}

To copy to clipboard, switch view to plain text mode 

You can use QSignalMapper to simplyfiy.