Disable close button in dialog

Question

5.00/5 (1 vote)

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MFC

UI

dialog

Hi,
how to disabled close button in a simple dialog?

Thanks
Vivek chauhan

Posted 29-May-10 1:29am

vivek.chauhan2009

Updated 7-Dec-18 12:56pm

Moak

v2

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4 solutions

Solution 1

Add CS_NOCLOSE to it's class style.

Posted 29-May-10 1:42am

OriginalGriff

Solution 3

You can use
closebutton.EnableWindow(0);
where closebutton is the variable name of the control.

Posted 3-Jun-10 0:48am

Anu Koshy

Solution 4

Pretty Simple

C++

WNDCLASSA WindClass = { 0 };

WindClass.hbrBackground = (HBRUSH__*)COLOR_WINDOW;
WindClass.hCursor = LoadCursorA((HINSTANCE)NULL, (LPCSTR)IDC_ARROW);
WindClass.hInstance = hInstance;
WindClass.lpszClassName = "WindowClass";
WindClass.lpfnWndProc = WindowProcedure;
WindClass.style = CS_NOCLOSE; /* This line here */

Posted 7-Dec-18 12:56pm

Member 14081722

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Nuri Ismail · Accepted Answer · 2010-05-29T01:48:00

Here is an example for you that will enable/disable the close button in runtime:

C++

BOOL bEnable = FALSE;     // TRUE to enable and FALSE to disable

//.....

UINT nMenuf = bEnable ? (MF_BYCOMMAND) : (MF_BYCOMMAND | MF_GRAYED | MF_DISABLED);

CMenu* pSysMenu = GetSystemMenu(FALSE);
if(pSysMenu)
{
  pSysMenu->EnableMenuItem(SC_CLOSE, nMenuf);
}

You will need to place this code in appropriate place (i.e. in OnInitDialog) of your dialog class. :)