Custom dialogs

The Dialog class handles a set of controls, which are added to the dialog by the AddControl method. For a subclass of the Dialog class, refer to PageSetupDialog in the last section of this chapter. The Dialog class provides a modal dialog, which means that all other windows in the application become disabled until the dialog is closed.

The user may navigate between controls with the Tab key and between radio buttons in the same group with the arrow keys. They can also use mnemonics to access controls.

Dialog.h

namespace SmallWindows { 

The dialogMap field is used by DialogProc to look up the dialog receiving the messages:

  extern map<HWND,Dialog*> dialogMap; 
  extern Font DialogFont; 

The Dialog class is a subclass of Window even though it calls the default Window constructor, which does not call the Win32 API function CreateWindowEx. Instead, DoModal collects information about the dialog and its controls and calls the Win32 API function DialogBoxIndirectParam:

 ...