WTL Button Menu Class

• Download demo executable - 7 Kb
• Download demo project - 10 Kb

Introduction

A small CButton-derived class that will display a popup menu when clicked. Easy to use and very handy for dialog based application.

Using CButtonMenu

To use this class with a WTL dialog, first include the header file in the MainDlg.h file:

#include "buttonmenu.h"

Next, add a CButtonMenu object to the class:

CButtonMenu m_wndButtonMenu;

Next (and this is important), add a REFLECT_NOTIFICATIONS() call to your dialogs message map (else the button won't get the BN_CLICKED notification message):

BEGIN_MSG_MAP(CMainDlg)
    ...
    REFLECT_NOTIFICATIONS()
END_MSG_MAP()

Now subclass an existing button control and set the popup menu that you want displayed in your dialogs OnInitDialog function:

// Create button menu
m_wndButtonMenu.SubclassWindow(GetDlgItem(IDC_BUTTON1));
// Set the menu ID that the button displays
m_wndButtonMenu.SetMenu(IDR_POPUP);

Finally, add the necessary COMMAND_ID_HANDLERs for your popup menu commands.

That's it! The button will be displayed with an arrow (using the Marlett font if available), and will display a popup menu when clicked.

Notes

When designing a dialog-box that uses this class, instead of using a normal button control, use a checkbox control that has the "Push like" style-bit set. The advantage of using a checkbox is that the button will stay pushed whilst the popup menu is displayed (see the example project for more details)

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here