DOCUMENT:Q152376 06-MAY-2001 [visualc] TITLE :HOWTO: How To Disable Push Buttons on a DialogBar in MFC PRODUCT :Microsoft C Compiler PROD/VER:winnt:1.0,2.0,2.1,2.2,4.0,4.1 OPER/SYS: KEYWORDS:kbDocView kbMFC KbUIDesign kbVC kbGrpDSMFCATL kbMFCCtrlBar ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - The Microsoft Foundation Classes (MFC), used with: - Microsoft Visual C++ for Windows, 16-bit edition, versions 1.0, 1.5, 1.51, 1.52, 1.52b, 1.52c - Microsoft Visual C++, 32-bit Editions, versions 1.0, 2.0, 2.1, 2.2, 4.0, 4.1 ------------------------------------------------------------------------------- SUMMARY ======= Push-button controls on a DialogBar cannot be disabled by calling EnableWindow. The following code has no effect: GetDlgItem(IDC_BUTTON1)->EnableWindow(FALSE); This article describes how to implement push-button controls that can be disabled. MORE INFORMATION ================ Controls on a DialogBar behave like the bitmaps on a Toolbar. They can be enabled or disabled by manually adding an ON_UPDATE_COMMAND_UI within the message map of the appropriate class (such as CMainFrame). Step-by-Step Example -------------------- After you have placed a control on your DialogBar, such as a push-button with a resource ID of IDC_BUTTON1, use the following steps to manage the state of the control: 1. Within the declaration of your class, add the declaration for a handler function: afx_msg void OnUpdateButton1(CCmdUI* pCmdUI); 2. Within the implementation of your class, add a manual entry in the message map: BEGIN_MESSAGE_MAP(CMainFrame, CMDIFrameWnd) //{{AFX_MSG_MAP(CMainFrame) ... //}}AFX_MSG_MAP ON_UPDATE_COMMAND_UI(IDC_BUTTON1, OnUpdateButton1) END_MESSAGE_MAP() 3. Provide the definition of the handler function, as follows: void CMainFrame::OnUpdateButton1(CCmdUI* pCmdUI) { pCmdUI->Enable( TRUE ); } Additional query words: 1.00 1.50 1.51 1.52 2.00 2.10 2.20 4.00 4.10 ====================================================================== Keywords : kbDocView kbMFC KbUIDesign kbVC kbGrpDSMFCATL kbMFCCtrlBar Technology : kbAudDeveloper kbMFC Version : winnt:1.0,2.0,2.1,2.2,4.0,4.1 Issue type : kbhowto ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.