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TreeCtrl - changing plus/minus images [message #16971]

Wed, 23 July 2008 22:45

rsrado
Messages: 1
Registered: July 2008
Location: Bulgaria

Junior Member

I would like to be able to set the plus/minus images to something different than CtrlImg::treeplus() and CtrlImg::treeminus(), in order to achieve some different look and feel.

I tried to find an easy way to do it, but as I couldn't, I made a small modification to the class:

In TreeCtrl.h:

class TreeCtrl : public Ctrl {
...
private:
    Image plusimage, minusimage;
...
public:
     	TreeCtrl& PlusImage(const Image& img)    { plusimage = img; return *this; }
	TreeCtrl& MinusImage(const Image& img)   { minusimage = img; return *this; }
...
}

In TreeCtrl.cpp:

TreeCtrl::TreeCtrl() {
...
	plusimage = CtrlImg::treeplus();
	minusimage = CtrlImg::treeminus();
...
}
...
void TreeCtrl::Paint(Draw& w)
{
....
      //ORIGINAL CODE: Image im = m.isopen ? CtrlImg::treeminus() : CtrlImg::treeplus();
      //REPLACED WITH:
      Image im = m.isopen ? minusimage : plusimage;
...

That worked just fine for me. I would be glad, to know if there is a better way and even more, if this helps somebody in some way.

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