MFC progress bar (cprogressctrl) re-painting

MFC progress bar (cprogressctrl) re-painting

First View a chart :

Create a class that inherits from cprogressctrl and add the onpaint message processing function.CodeAs follows:

 Void  Cnewprogress: onpaint () {cpaintdc DC (  This  ); Cbrush backgroundbrush; backgroundbrush. createsolidbrush (RGB (  255 , 0 , 0  ); Cbrush forebrush; forebrush. createsolidbrush (RGB (  100 , 255 , 0  ); Crect R;  This -> Getclientrect (R );  Double With = R. Width ();  Int  Min, Max;  This ->Getrange (Min, max );  Int Pos = This -> Getpos ();  Double Unit = ( Double ) R. Width ()/(max- Min); DC. fillrect (r, & Backgroundbrush); R. Right = POS * Unit; DC. fillrect (r, & Forebrush );} 

 

In this way, cprogressctrl is re-painted.

if you want to add an onlbuttondown message to the progress bar and click it with the left mouse button to the specified position, you must add the onlbuttondown message processing function. The Code is as follows:

  void   cnewprogress: onlbuttondown (uint nflags, cpoint point) {crect R;   This ->  getclientrect (r);   double  with =  r. width ();   int   min, max;   This ->  getrange (Min, max);   double  unit = ( double ) (max-min)/R. width (); ///   int  Pos = point. x *  unit;   This ->  setpos (POS); cprogressctrl: onlbuttondown (nflags, point );}