michael sephton wrote:
>
>
> David Ibbitson wrote:
>> I'm just subclassing Fl_Double_Window and overriding the draw() method.
>> My subclass is basically just a composite widget. I've been following
>> the docs but the window just isn't being drawn correctly. Its just
>> full of garbage, like the buffer hasnt been properly initialized.
>> Here's the code:
>>
>>
>>
>> #include <FL/Fl.H>
>> #include <FL/Fl_Double_Window.H>
>> #include <FL/fl_draw.H>
>>
>> class mywin : public Fl_Double_Window {
>>
>> public:
>>
>> mywin(int x,int y,int w,int h,const char * label = 0)
>> : Fl_Double_Window(x,y,w,h,label) {
>> box(FL_THIN_UP_BOX);
>> color(fl_rgb_color(190,192,190));
>> }
>>
>> ~mywin() { }
>>
>> protected:
>>
>> void draw();
>>
>> };
>>
>> void mywin::draw() {
>> Fl_Widget * const * a = array();
>> if(damage() == FL_DAMAGE_CHILD) {
>> for(int i = children(); i--; a++)
>> update_child(**a);
>> }
>> else if(damage() == FL_DAMAGE_ALL) {
>> draw_box(box(),color());
>> for(int i = children(); i--; a++)
>> draw_child(**a);
>> }
>> else if(damage() & (FL_DAMAGE_ALL | 1)) {
>> // update area 1 ...
>> }
>> }
>>
>> int main(int argc, char ** argv) {
>>
>> mywin * w = new mywin(200,200,200,200,"mywin");
>> w->end();
>>
>> w->show();
>>
>> return Fl::run();
>> }
>
>
>
> I think that in David's example, the window is filled with junk because
> Fl_Double_Window::draw() is not called at the start of the mywin::draw()
> function.
> So try:
> void mywin::draw() {
> Fl_Double_Window::draw();
> //Your code here
> }
Hi Michael,
I've tried that as well, same result...
However it does work if I remove the box() call from the constructor.
Very strange..
Cheers,
David
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