Disable Close Button in the Dialog's Caption

[solex]

What do you mean by "in the caption" Would GetDlgItem(ID_CLOSE)->EnableWindow(FALSE); do? A vast majority of our imports comes from outside the country. George W. Bush

[Tomasz Sowinski]

I don't think it's possible unless you draw the caption and its buttons yourself in WM_NCPAINT. Why do you need this functionality? Tomasz Sowinski -- http://www.shooltz.com

[Eugene Pustovoyt]

In some cases it is necessary for me to forbid for the user to make a cancellation, and button Close is equivalent to a cancellation!

[Deepak Khajuria]

Disabling the menu items in system menu disables the buttons on the Caption Bar. The following code should do:

CMenu \*pMenu= GetSystemMenu(FALSE);
pMenu->EnableMenuItem(SC\_CLOSE,MF\_BYCOMMAND|MF\_DISABLED);
pMenu->RemoveMenu(SC\_CLOSE,MF\_BYCOMMAND);

Deepak Khajuria

[Tomasz Sowinski]

Nice trick! :-D I've checked this on W2K - it's enough to call EnableMenuItem. Also, if for some reason it's OK to leave disabled item in the system menu, then MF_GRAYED instead of MF_DISABLED will be better - the menu item will actually look disabled. Tomasz Sowinski -- http://www.shooltz.com

[Eugene Pustovoyt]

What's the ID_CLOSE

[Eugene Pustovoyt]

Great, it's work! Thanks everybody for help!!!! Best regards, Eugene Pustovoyt :-D

[Alvaro Mendez]

I'm glad you got it working, but you may consider that instead of disabling the Close button, you let the user press it but then show him a message box explaining why it's wrong to do so. Sometimes this is a more user-friendly way to go, since it doesn't leave the user wondering why he can't do something he's normally allowed to do (like closing windows), and then perhaps picking up the phone to ask Tech Support. If you tell him with a message box, he'll know right away. Regards, Alvaro

[Eugene Pustovoyt]

Very good remark, but I do not know as it is possible to handle the message from the button taking place outside of client parts of dialog! Therefore I while shall leave as am! If you may prompt me how make that about what you wrote (it is desirable with an example of a code) I shall be very grateful to you. :omg:

[Alvaro Mendez]

When the user presses the Close button, the WM_CLOSE message is sent to the dialog box. Use the Class Wizard to add a handler (OnClose) for that message and you can write your code in there. Regards, Alvaro

[Orgen Kl]

Very good, this works fine. This disables the main windows close button. How can I disable the close button form a child window, say a open document in a mdi application? Thanks for you help juergen