CMenu::TrackPopupMenu
Displays a floating pop-up menu at the specified location and tracks the selection of items on the pop-up menu.
BOOL TrackPopupMenu(
UINT nFlags,
int x,
int y,
CWnd* pWnd,
LPCRECT lpRect = 0
);
Parameters
nFlags
Specifies screen-position and mouse-position flags. See TrackPopupMenu for a list of available flags.x
Specifies the horizontal position in screen coordinates of the pop-up menu. Depending on the value of the nFlags parameter, the menu can be left-aligned, right-aligned, or centered relative to this position.y
Specifies the vertical position in screen coordinates of the top of the menu on the screen.pWnd
Identifies the window that owns the pop-up menu. This parameter cannot be NULL, even if the TPM_NONOTIFY flag is specified. This window receives all WM_COMMAND messages from the menu. In Windows versions 3.1 and later, the window does not receive WM_COMMAND messages until TrackPopupMenu returns. In Windows 3.0, the window receives WM_COMMAND messages before TrackPopupMenu returns.lpRect
Ignored.
Return Value
This method returns the result of calling TrackPopupMenu in the Windows SDK.
Remarks
A floating pop-up menu can appear anywhere on the screen.
Example
// The code fragment shows how to get the File menu from the
// application window and displays it as a floating popup menu
// when the right mouse button is clicked in view.
// CMdiView is a CView-derived class.
void CMdiView::OnRButtonDown(UINT nFlags, CPoint point)
{
CView::OnRButtonDown(nFlags, point);
CMenu* menu_bar = AfxGetMainWnd()->GetMenu();
CMenu* file_menu = menu_bar->GetSubMenu(0);
ASSERT(file_menu);
ClientToScreen(&point);
file_menu->TrackPopupMenu(TPM_LEFTALIGN |TPM_RIGHTBUTTON, point.x,
point.y, this);
}
Requirements
Header: afxwin.h