Hi guys
I have next problems
I have base class "Shape", it cointains virtual function draw(HWND), I have child class "Line" which contains same function draw(hwnd).
When I draw line in WM_MOUSEMOVE, it is all ok, but when I minimize or change window size, my line disappear
I have vector with pointer to base class
Code:
vector<Shape*>ff;
Shape *f;
case WM_LBUTTONDOWN:
{
IsDrawing = TRUE;
StartX = LOWORD(lParam);
StartY = HIWORD(lParam);
EndX = LOWORD(lParam);
EndY = HIWORD(lParam);
switch(iShape)
{
case LINE:
f=new Line();
break;
case RECTANGLE:
f=new MyRectangle();
break;
}
f->SetBrushWidth(5);
f->SetColor(RGB(255,0,0));
f->SetStartCoord(StartX,StartY);
f->SetEndCoord(EndX,EndY);
f->SetMode(1);
f->draw(hWnd);
break;
}
case WM_MOUSEMOVE:
if( IsDrawing == TRUE )
{
f->SetEndCoord(EndX,EndY);
f->SetMode(2);
f->draw(hWnd);
EndX = LOWORD(lParam);
EndY = HIWORD(lParam);
f->SetEndCoord(EndX,EndY);
f->SetMode(2);
f->draw(hWnd);
}
break;
case WM_LBUTTONUP:
EndX = LOWORD(lParam);
EndY = HIWORD(lParam);
f->SetEndCoord(EndX,EndY);
f->SetMode(3);
f->draw(hWnd);
ff.push_back(f);
IsDrawing = FALSE;
break;
It is drawing ok, but when change windows size
What I do wrong?