helptext.h

电脑编程技巧和源码。很不错的。

CWnd::OnNcHitTest  
afx_msg UINT OnNcHitTest( CPoint point );

Return Value

One of the mouse hit-test enumerated values listed below. 

Parameters

point

Contains the x- and y-coordinates of the cursor. These coordinates are always screen coordinates.

Remarks

The framework calls this member function for the CWnd object that contains the cursor (or the CWnd object that used the SetCapture member function to capture the mouse input) every time the mouse is moved.

Note   This member function is called by the framework to allow your application to handle a Windows message. The parameters passed to your function reflect the parameters received by the framework when the message was received. If you call the base-class implementation of this function, that implementation will use the parameters originally passed with the message and not the parameters you supply to the function.

CWnd Overview |  Class Members |  Hierarchy Chart

See Also   CWnd::GetCapture,WM_NCHITTEST

Mouse Enumerated Values
HTBORDER   In the border of a window that does not have a sizing border.


HTBOTTOM   In the lower horizontal border of the window.


HTBOTTOMLEFT   In the lower-left corner of the window border.


HTBOTTOMRIGHT   In the lower-right corner of the window border.


HTCAPTION   In a title-bar area.


HTCLIENT   In a client area.


HTERROR   On the screen background or on a dividing line between windows (same as HTNOWHERE except that the DefWndProc Windows function produces a system beep to indicate an error).


HTGROWBOX   In a size box.


HTHSCROLL   In the horizontal scroll bar.


HTLEFT   In the left border of the window.


HTMAXBUTTON   In a Maximize button.


HTMENU   In a menu area.


HTMINBUTTON   In a Minimize button.


HTNOWHERE   On the screen background or on a dividing line between windows.


HTREDUCE   In a Minimize button.


HTRIGHT   In the right border of the window.


HTSIZE   In a size box (same as HTGROWBOX).


HTSYSMENU   In a Control menu or in a Close button in a child window.


HTTOP   In the upper horizontal border of the window.


HTTOPLEFT   In the upper-left corner of the window border.


HTTOPRIGHT   In the upper-right corner of the window border.


HTTRANSPARENT   In a window currently covered by another window.


HTVSCROLL   In the vertical scroll bar.


HTZOOM   In a Maximize button. 
//////
CWnd::GetMenu  
CMenu* GetMenu( ) const;

Return Value

Identifies the menu. The value is NULL if CWnd has no menu. The return value is undefined if CWnd is a child window. 

The returned pointer may be temporary and should not be stored for later use.

Remarks

Retrieves a pointer to the menu for this window. This function should not be used for child windows because they do not have a menu.

CWnd Overview |  Class Members |  Hierarchy Chart

See Also   ::GetMenu
//////
CWnd::OnMenuSelect  
afx_msg void OnMenuSelect( UINT nItemID, UINT nFlags HMENU hSysMenu );

Parameters

nItemID

Identifies the item selected. If the selected item is a menu item, nItemID contains the menu-item ID. If the selected item contains a pop-up menu, nItemID contains the pop-up menu index, and hSysMenu contains the handle of the main (clicked-on) menu.

nFlags

Contains a combination of the following menu flags: 

MF_BITMAP   Item is a bitmap.


MF_CHECKED   Item is checked.


MF_DISABLED   Item is disabled.


MF_GRAYED   Item is dimmed.


MF_MOUSESELECT   Item was selected with a mouse.


MF_OWNERDRAW   Item is an owner-draw item.


MF_POPUP   Item contains a pop-up menu.


MF_SEPARATOR   Item is a menu-item separator.


MF_SYSMENU   Item is contained in the Control menu. 
hSysMenu

If nFlags contains MF_SYSMENU, identifies the menu associated with the message. If nFlags contains MF_POPUP, identifies the handle of the main menu. If nFlags contains neither MF_SYSMENU nor MF_POPUP, it is unused.

Remarks

If the CWnd object is associated with a menu, OnMenuSelect is called by the framework when the user selects a menu item. 

If nFlags contains 0xFFFF and hSysMenu contains 0, Windows has closed the menu because the user pressed the ESC key or clicked outside the menu.

Note   This member function is called by the framework to allow your application to handle a Windows message. The parameters passed to your function reflect the parameters received by the framework when the message was received. If you call the base-class implementation of this function, that implementation will use the parameters originally passed with the message and not the parameters you supply to the function.

CWnd Overview |  Class Members |  Hierarchy Chart

See Also   WM_MENUSELECT