Hi guys,
happy new year!
I am a very new bird with Qt and am writing a small project with 2 windows: a preference window and a bargraph window. In preference window you can change the configurations like color, size usw., and the bar in the bargraph window should be changed correspongdingly.
Now I am focus on the color change function. I added a color choose button on the preference window and with clicking it the slot function selectBarColor will be called and a QColorDialog can be opened. At the end of this funtion I tried to send the signal like this:
connect(&d, SIGNAL(colorSelected(const QColor&)), &bargraph, SLOT(setColor(const QColor&)));
with d is the QColorDialog object and bargraph is a Bargraph object.
And I wrote the slot setColor in Bargraph like this:
void Bargraph::setColor(const QColor & color)
{
barColor = color;
update();
}
But it didn’t work, it seems the setColor slot didn’t get the signal.
What could be the problems here?
Thanks a lot!
↧
