wxWidgets issue using wxClientDc - wxwidgets

Question

i'm be beginning to use wxWidgets in a project and i'm using wxClientDc to draw on a image. I created a class that inherits wxStaticBitmap adding my properties and drawing over it. To clear the image i'm setting the background as the same wxBitmap that i used in MY image:
//that is my class
class myImage : public wxStaticBitmap {
public:
wxBitmap frame; //imagem
myImage(wxWindow* parent, wxWindowID id, wxPoint pos, wxSize size, wxBitmap frame);
private:
void redesenha();
void mouseUp(wxMouseEvent& event);
void mouseDown(wxMouseEvent& event);
void mouseMove(wxMouseEvent& event);
wxDECLARE_EVENT_TABLE();
};
myImage::myImage(wxWindow* parent, wxWindowID id, wxPoint pos, wxSize size, wxBitmap frame): wxStaticBitmap(parent, id, frame, pos, size){
this->frame = frame;
}
//that is my function to clear my image
void myFrame::onClickClear(wxCommandEvent& event)
{
wxClientDC dc(myImg);
dc.SetBackground(wxBrush(myImg->frame)); //frame is a wxBitmap type
dc.Clear();
}
The issue is that works in my laptop but when my friend download and compile it's doesn't work in his laptop.

Answer 1

If you need to "clear" a wxStaticBitmap, just assign a solid bitmap with the given colour.
More generally speaking, you shouldn't try to draw over the native controls (such as wxStaticBitmap) and you shouldn't use wxClientDC at all as drawing is only supported from wxEVT_PAINT handlers on many modern systems (e.g. macOS).