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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| Yes
| Win32s
| Yes
| Import Library
| user32.lib
| Header File
| winuser.h
| Unicode
| No
| Platform Notes
| None
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TrackPopupMenu
The TrackPopupMenu function displays a shortcut menu at the specified location and tracks the
selection of items on the menu. The shortcut menu can appear anywhere on the
screen.
BOOL TrackPopupMenu(
HMENU hMenu,
| // handle of shortcut menu
| UINT uFlags,
| // screen-position and mouse-button flags
| int x,
| // horizontal position, in screen coordinates
| int y,
| // vertical position, in screen coordinates
| int nReserved,
| // reserved, must be zero
| HWND hWnd,
| // handle of owner window
| CONST RECT *prcRect
| // points to RECT that specifies no-dismissal area
| );
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Parameters
hMenu
Identifies the shortcut menu to be displayed. The handle can be obtained by
calling CreatePopupMenu to create a new shortcut menu, or by calling GetSubMenu to retrieve the handle of a submenu associated with an existing menu item.
uFlags
A set of bit flags that specify function options.
Use one of the following bit flag constants to specify how the function
positions the popup menu horizontally:
Value
| Meaning
| TPM_CENTERALIGN
| If this flag is set, the function centers the shortcut menu horizontally
relative to the coordinate specified by the x parameter.
| TPM_LEFTALIGN
| If this flag is set, the function positions the shortcut menu so that its left
side is aligned with the coordinate specified by the x parameter.
| TPM_RIGHTALIGN
| Positions the shortcut menu so that its right side is aligned with the
coordinate specified by the x parameter.
|
Use one of the following bit flag constants to specify which mouse button the
shortcut menu tracks:
Value
| Meaning
| TPM_LEFTBUTTON
| If this flag is set, the shortcut menu tracks the left mouse button.
| TPM_RIGHTBUTTON
| If this flag is set, the shortcut menu tracks the right mouse button
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x
Specifies the horizontal location of the shortcut menu, in screen coordinates.
y
Specifies the vertical location of the shortcut menu, in screen coordinates.
nReserved
Reserved; must be zero.
hWnd
Identifies the window that owns the shortcut menu. This window receives all
messages from the menu. The window does not receive a WM_COMMAND message from the menu until the function returns.
prcRect
Points to a RECT structure that specifies the portion of the screen in which the user can
select without dismissing the shortcut menu. If this parameter is NULL, the
shortcut menu is dismissed if the user clicks outside the shortcut menu.
Return Values
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error
information, call GetLastError.
See Also
CreatePopupMenu, GetSubMenu, RECT, WM_COMMAND
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