private void WmMeasureMenuItem(ref Message m)
{
System.Windows.Forms.NativeMethods.MEASUREITEMSTRUCT lParam = (System.Windows.Forms.NativeMethods.MEASUREITEMSTRUCT)m.GetLParam(typeof(System.Windows.Forms.NativeMethods.MEASUREITEMSTRUCT));
MenuItem menuItemFromItemData = MenuItem.GetMenuItemFromItemData(lParam.itemData);
if (menuItemFromItemData != null)
{
menuItemFromItemData.WmMeasureItem(ref m);
}
}
private void WmDrawItemMenuItem(ref Message m)
{
// Obtain the menu item object
NativeMethods.DRAWITEMSTRUCT dis = (NativeMethods.DRAWITEMSTRUCT)m.GetLParam(typeof(NativeMethods.DRAWITEMSTRUCT));
// A pointer to the correct MenuItem is stored in the draw item
// information sent with the message.
// (See MenuItem.CreateMenuItemInfo)
MenuItem menuItem = MenuItem.GetMenuItemFromItemData(dis.itemData);
// Delegate this message to the menu item
if (menuItem != null)
{
menuItem.WmDrawItem(ref m);
}
}
private void WmMeasureMenuItem(ref Message m)
{
// Obtain the menu item object
NativeMethods.MEASUREITEMSTRUCT mis = (NativeMethods.MEASUREITEMSTRUCT)m.GetLParam(typeof(NativeMethods.MEASUREITEMSTRUCT));
Debug.Assert(m.LParam != IntPtr.Zero, "m.lparam is null");
// A pointer to the correct MenuItem is stored in the measure item
// information sent with the message.
// (See MenuItem.CreateMenuItemInfo)
MenuItem menuItem = MenuItem.GetMenuItemFromItemData(mis.itemData);
Debug.Assert(menuItem != null, "UniqueID is not associated with a menu item");
// Delegate this message to the menu item
if (menuItem != null)
{
menuItem.WmMeasureItem(ref m);
}
}
