#include#include wxWindow* window = new wxFrame(nullptr, wxID_ANY, "Hello World"); wxPaintDC paintDC(window); wxDCImpl* impl = paintDC.GetImpl(); // Use the implementation class to draw graphics impl->DrawLine(0, 0, 100, 100);
#includeThis example creates a custom implementation of wxDCImpl that overrides the DrawRect method to draw a dashed rectangle. The custom implementation is set as the implementation for a wxMemoryDC using the SetImpl method. The DrawRect method is then called on the wxDC object to draw a rectangle using the custom implementation. Package library: wxWidgetsclass MyDCImpl : public wxDCImpl { public: MyDCImpl() {} virtual ~MyDCImpl() {} void DrawRect(int x, int y, int width, int height) override { // Draw a dashed rectangle using platform-specific code // ... } }; int main(int argc, char** argv) { wxDC* dc = new wxMemoryDC(); wxDCImpl* impl = dc.GetImpl(); MyDCImpl* myImpl = new MyDCImpl(); impl->SetImpl(myImpl); // Draw with the custom implementation dc->DrawRect(10, 10, 100, 100); }