Q142202: HOWTO: Create a Progress Bar on the Status Bar

Article: Q142202
Product(s): Microsoft C Compiler
Version(s): 4.0,5.0,6.0
Operating System(s): 
Keyword(s): kbMFC _IK11590 kbStatBar KbUIDesign kbVC400 kbVC500 kbVC600 kbGrpDSMFCATL kbMFCCtrlBar
Last Modified: 29-APR-2002

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The information in this article applies to:

- The Microsoft Foundation Classes (MFC), used with:
   - Microsoft Visual C++, 32-bit Editions, version 4.0 
   - Microsoft Visual C++, 32-bit Enterprise Edition, versions 5.0, 6.0 
   - Microsoft Visual C++, 32-bit Professional Edition, versions 5.0, 6.0 
   - Microsoft Visual C++, 32-bit Learning Edition, version 6.0 
   - Microsoft Visual C++.NET (2002) 
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SUMMARY
=======

There are times when you may want to show the progress of a process on the
status bar. Developer Studio does this when loading a project. You can implement
this by using CStatusBar and CProgressCtrl.

MORE INFORMATION
================

A default AppWizard-generated MFC application has a class (CMainFrame) that
contains a member variable m_wndStatusBar of type CStatusBar. The following
sample code uses this member variable as the parent of a CProgressCtrl, which
will be positioned over the first pane of m_wndStatusBar. First, the
CProgressCtrl is created. Then, the sample code simulates a lengthy process
using the Sleep function in a for loop.

Sample Code
-----------

     /* Compile options needed: default
     */ 

     // This is a menu option handler that takes a long period of time
     void CMainFrame::OnLengthyProcess()
     {
         // Create the CProgressCtrl as a child of the status bar positioned
         // over the first pane.

         RECT rc;
         m_wndStatusBar.GetItemRect (0, &rc);
         CProgressCtrl wndProgress;
         VERIFY (wndProgress.Create(WS_CHILD | WS_VISIBLE, rc,
                                                 &m_wndStatusBar, 1));
         wndProgress.SetRange(0, 50);
         wndProgress.SetStep(1);

         // Perform some lengthy process, simulated here with a for loop
         // and the Sleep function.

         for(int i=0;i<50;i++)
         {
            Sleep(50);
            wndProgress.StepIt();
         }
     }

Additional query words:

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Keywords          : kbMFC _IK11590 kbStatBar KbUIDesign kbVC400 kbVC500 kbVC600 kbGrpDSMFCATL kbMFCCtrlBar 
Technology        : kbAudDeveloper kbMFC
Version           : :4.0,5.0,6.0
Issue type        : kbhowto

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