REFERENCE GUIDE

Multiple document interface messagesWindows multiple document interface (MDI) provides applications with astandard interface for displaying multiple documents within the sameinstance of an application. An MDI application creates a frame windowwhich contains a client window in place of its client area. The applicationcreates an MDI client window by calling CreateWindow with theMDICLIENT class and passing a CLiENTCREATESTRUCT data structure asthe function's IpParam parameter. This client window in turn can ownmultiple child windows, each of which displays a separate document. AnMDI application controls these child windows by sending messages to itsclient window. The following briefly describes these MDI messages:MessageWM_MDIACTIVATEWM_MDICASCADEWM_MDICREATEWM_MDIDESTROYWM_MDIGETACTIVEWM_MDIICONARRANGEWM_MDIMAXIMIZEWM_MDINEXTWM_MDIRESTOREWM_MDISETMENUWM_MDITILEDescriptionActivates a child window.Arranges child windows in a cascade format.Creates a child window.Closes a child window.Returns the current active MDI child window.Arranges all minimized child windows.Maximizes an MDI child window.Activates the next child window.Restores a child window from a maximized orminimized state.Replaces the menu of an MDI frame window, theWindow pop-up menu, or both.Arranges all child windows in a tiled format.TopicMessage-processingfunctionsFunction descriptionsMessage descriptionsWindows data types andstructuresDynamic data exchangeGeneral information onWindows programmingReferenceReference, Volume 1: Chapter 1,"Window manager interface functions"Reference, Volume 1: Chapter 4, "Functions directory"Reference, Volume 1: Chapter 6, "Messages directory"Reference, Volume 2: Chapter 7,"Data types and structures"Reference, Volume 2: Chapter 15, "Windows DDEprotocol definition"Guide to Programming: Chapter 22, "Dynamic dataexchange"Guide to Programming: Chapter 1,"An overview of the Windows environment"600Software development kit