CWnd::MessageBox

Creates and displays a window that contains an application-supplied message and caption, plus a combination of the predefined icons and pushbuttons described in the Message-Box Styles list.

int MessageBox(
   LPCTSTR lpszText,
   LPCTSTR lpszCaption = NULL,
   UINT nType = MB_OK 
);

Parameters

• lpszText
  Points to a CString object or null-terminated string containing the message to be displayed.

• lpszCaption
  Points to a CString object or null-terminated string to be used for the message-box caption. If lpszCaption is NULL, the default caption "Error" is used.

• nType
  Specifies the contents and behavior of the message box.

Return Value

This method utilizes the MessageBox function as defined in the Windows SDK. This method returns the result of calling this function.

Remarks

Use the global function AfxMessageBox instead of this member function to implement a message box in your application.

The following shows the various system icons that can be used in a message box:

	MB_ICONHAND, MB_ICONSTOP, and MB_ICONERROR
	MB_ICONQUESTION
	MB_ICONEXCLAMATION and MB_ICONWARNING
	MB_ICONASTERISK and MB_ICONINFORMATION

Example

void CMainFrame::OnDisplayErrorMessage()
{
   // This displays a message box with the title "Error"
   // and the message "Help, Something went wrong."
   // The error icon is displayed in the message box, along with
   // an OK button.
   MessageBox(_T("Help, Something went wrong."), _T("Error"), 
      MB_ICONERROR | MB_OK);
}

Requirements

Header: afxwin.h

See Also

Reference

CWnd Class

Hierarchy Chart

MessageBox

AfxMessageBox

Concepts

CWnd Members