MFC draws Checkers

(1) Create a new MFC blank based on the visual class of the project

(2) overriding the OnPaint message in the View class

void Cmy005view::onpaint () {CPAINTDC DC (this),//device context for painting//todo:add your message Handler code here//    Do not call Cview::onpaint () for painting messages//client area drawing/*hdc hdc;hdc=::getdc (m_hwnd); Movetoex (Hdc,0,0,null); LineTo (hdc,200,200);:: ReleaseDC (M_HWND,HDC); */CDC *PDC;PDC=GETDC ();//Draw Checkerboard CPen pen (ps_solid, 2, RGB (0,0,0)); CPen *poldpen = Pdc->selectobject (&pen);//get pointer int ox=100; int oy=100; int numx=10;//number of rows int numy=10;//column number for (int i=0;i<numx;i++)//Draw line {Pdc->moveto (Ox+30*i,oy); Pdc->lineto (Ox+30*i , 370);  } for (int j=0;j<numy;j++)//Draw line {Pdc->moveto (100,oy+30*j); Pdc->lineto (370,oy+30*j);}   /*cdc::fillrect CBrush () CBrush Brush (RGB (255, 0, 0)); dc.   Filllrect (Crect (M_point, point), &brush); *//Color fill CBrush brush1 (m_color);   for (int n=0;n<numy;n=n+2) {for (int m=0;m<numx;m=m+2) {CRect rc (ox+30*m,oy+n*30,ox+30+30*m,oy+30+n*30);  Pdc->fillrect (RC,&AMP;BRUSH1); }} CBrush Brush2 (RGB (0,0,255));        for (int p=1;p<numy-1;p=p+2) {for (int q=1;q<numx-1;q=q+2) {CRect rc (ox+30*q,oy+p*30,ox+30+30*q,oy+30+p*30);   Pdc->fillrect (RC,&AMP;BRUSH2);}}   Draw polygons/*cpoint Ps[6]={cpoint (300,200), CPoint (300,300), CPoint (320,350), CPoint (400,400), CPoint (400,250)}; Pdc->polygon (ps,4); *//client area Drawing/*pdc->moveto (0,0);pd C->lineto (200,100);    ReleaseDC (PDC); The entire window is plotted CWINDOWDC DW (GetParent ());d W. MoveTo (0,0);d W.    LineTo (CPoint (300,300));//non-client area drawing CClientDC du (GetParent ()); Du. MoveTo (0,0);d U. LineTo (CPoint (30,200)); UpdateData (TRUE); */}

(3) If you want to change the color of some of the squares in the menu, you can add a COLORREF data member to the view class

Then add the following code in the response function of the newly created menu

CColorDialog cdlg;if (Cdlg.domodal () ==idok) {//logfont LOGFONT;       M_color=cdlg.getcolor ();   OnPaint ();}

(4) After the operation, the results are as follows

The original shading effect changes color after coloring effect

Reference code:

1,pund,basic-graphics, 2014.

MFC draws Checkers