MDI Command Bar
This is a
CCommandBarCtrl extension to fully support the MDI architecture.
The implementation consists of three classes:
CCommandBarCtrl2 manages the additional MDI buttons,
CMDIChildWindowImpl2 forwards the size changes to
CMDIChildWinImplTraits2 implements a helper class to keep the maximize state when creating a new MDI child window. The class definitions and implementations are in the file
AtlCmdBar2.h, which is included in the demo project.
How to use the control in your WTL App
First, include the file
AtlCmdBar2.h in your applications
.cpp file. Then replace the definition of the main frames command bar
CCommandBarCtrl m_CmdBar; with
CCommandBarCtrl2 m_CmdBar; in
mainfrm.h. Finally replace all instances of
ChildFrm.h. That's all.
About the implementation
The additional MDI buttons are implemented as custom draw buttons of the menu toolbar and are drawn via
DrawFrameControl(). These are added/removed in respond to a size change of the MDI child window. Additionally,
WM_MDISETMENU has to be handled to insert the MDI child windows menu into the new frame window menu.
Below are detailed explanations of the most interesting functions.