Cwnd -- 4

15. menu functions (Table 6.16)

Table 6. 16 menu member functions of cwnd classes

Member Functions	Description
Getmenu	Returns the pointer to the specified menu.
Setmenu	Set the menu to the specified menu
Drawmenubar	Redraw menu bar
Getsystemmenu	Allow application access control menu for copying and Modification

Continued table 6.16

Member Functions	Description
Hilitemenuitem	Highlight top-level menu items or remove the highlight display of top-level menu items

16. tooltip functions (Table 6.17)

Table 6. 17 tooltip functions for cwnd classes

Member Functions	Description
Enabletooltip	Allow tooltip controls
Canceltooltip	Disable tooltip controls
Filtertooltipmessage	Obtains the title or text associated with a widget in the dialog box.
Ontoolhittest	Determines whether a vertex is in the rectangle bound to the specified tool and obtains information about the tool.

17. timer functions (Table 6.18)

Table 6. 18 timer member functions of cwnd type

Member Functions	Description
Settimer	Install the system timer and send the wm_timer message when the timer is triggered.
Killtimer	Eliminate system timers

18. Prompt function (Table 6.19)

Table 6. Prompt member functions for 19 types of cwnd

Member Functions	Description
Flashwindow	Flashing window once
MessageBox	Create and display a window that includes the message and title provided by the application

19. Window message functions (Table 6.20)

Table 6. 20 window message member functions of cwnd type

Member Functions	Description
Getcurrentmessage	Returns the pointer to the message being processed in the window. Only whenOnmessageCall the member function in the message processing function.
Default	Call the default Window Process, which provides default processing for messages not processed by all applications
Pretranslatemessage	Used by cwinapp to filter window messages before they are sent to translatemessage and dispatchmessage

Continued table 6.20

Member Functions	Description
Sendmessage	Sends a message to the cwnd object until the object processes the message.
Postmessage	Put a message into the message queue of the program. Return immediately without waiting for the window to process the message.
Sendpolicymessage	Sends the specified message to the window and returns the message as quickly as possible. This depends on how the calling thread creates the window.

20. Clipboard functions (Table 6.21)

Table 6. 21-class cwnd clipboard Functions

Member Functions	Description
Changeconboardchain	Remove the cwnd object from the clipboard viewer chain
Setclipboardviewer	Add the cwnd object to the window chain. These windows will receive a notification when the clipboard content changes.
Openclipboard	Open the clipboard. Other programs can change the clipboard only when the Windows closeclipboard function is called.
Getclipboardowner	Obtains the pointer of the current clipboard owner.
Getopenclipboardwindow	Returns the pointer to the window that currently opens the clipboard.
Getclipboardviewer	Returns the pointer to the first window in the clipboard viewer chain.

21. Ole controls and functions (Table 6.22)

Table 6. 22 ole control functions of cwnd classes

Member Functions	Description
Setproperty	Set OLE Control Properties
Onambientproperty	Implement environment attribute values
Getcontrolunknown	Returns a pointer to an unknown ole control.
Getproperty	Obtains the properties of an ole control.
Invokehelper	Call ole control methods or properties

22. Reload functions (Table 6.23)

　

Table 6. 23 reload-able member functions of cwnd classes

Member Functions	Description
Windowproc	Provides a window process for the cwnd object. The default Window Process sends messages through message ing
Defwindowproc	Call the default Window Process, which provides default processing for all window messages not processed by the application
Postncdestroy	Called by the onncdestroy function after the window is destroyed
Onnotify	It is called by the Framework to notify the parent window of an event occurring in a control or the required information of the control.
Onchildnotify	The parent window is called to give the notification control a chance to respond to the notification.
Dodataexchange	It is used for dialog box data exchange and verification. Called by updatedata

Other functions include message processing functions for various window messages. These functions are numerous and will not be described here. Almost all the message processing functions defined in the cwnd class have the same naming method. The format is prefix on and corresponding message name, for example, the processing function of the wm_paint message is named onpaint in the cwnd class. Therefore, you only need to know the message to be processed, and the processing function name of the message can be quickly deduced.