/// <summary>
/// Creates the native menu item.
/// </summary>
/// <param name="toolStripItem">The tool strip item.</param>
/// <param name="id">The id.</param>
/// <returns>The native menu ite,.</returns>
private static MENUITEMINFO CreateNativeMenuItem(ToolStripItem toolStripItem, uint id)
{
// Create a menu item info, set its size.
var menuItemInfo = new MENUITEMINFO();
menuItemInfo.cbSize = (uint)Marshal.SizeOf(menuItemInfo);
menuItemInfo.wID = id;
// Depending on the type of the item, we'll call the appropriate building function.
if(toolStripItem is ToolStripMenuItem)
BuildMenuItemInfo(ref menuItemInfo, (ToolStripMenuItem)toolStripItem);
else if(toolStripItem is ToolStripSeparator)
BuildSeparatorMenuItemInfo(ref menuItemInfo);
// Return the menu item info.
return menuItemInfo;
}
/// <summary>
/// Builds the menu item info.
/// </summary>
/// <param name="menuItemInfo">The menu item info.</param>
/// <param name="menuItem">The menu item.</param>
private static void BuildMenuItemInfo(ref MENUITEMINFO menuItemInfo, ToolStripMenuItem menuItem)
{
// Set the mask - we're interested in essentially everything.
menuItemInfo.fMask = (uint)(MIIM.MIIM_BITMAP | MIIM.MIIM_STRING | MIIM.MIIM_FTYPE |
MIIM.MIIM_ID | MIIM.MIIM_STATE);
// If the menu item has children, we'll also create the submenu.
if (menuItem.HasDropDownItems)
{
menuItemInfo.fMask += (uint) MIIM.MIIM_SUBMENU;
menuItemInfo.hSubMenu = User32.CreatePopupMenu();
}
// The type is the string.
menuItemInfo.fType = (uint)MFT.MFT_STRING;
// The type data is the text of the menu item.
menuItemInfo.dwTypeData = menuItem.Text;
// The state is enabled.
menuItemInfo.fState = menuItem.Enabled ? (uint)MFS.MFS_ENABLED : (uint)(MFS.MFS_DISABLED | MFS.MFS_GRAYED);
// If the menu item is checked, add the check state.
if (menuItem.Checked)
{
menuItemInfo.fState += (uint) MFS.MFS_CHECKED;
}
// Is there an icon?
menuItemInfo.hbmpItem = menuItem.Image != null ? new Bitmap(menuItem.Image).GetHbitmap() : IntPtr.Zero;
}
/// <summary>
/// Builds the menu item info.
/// </summary>
/// <param name="menuItemInfo">The menu item info.</param>
private static void BuildSeparatorMenuItemInfo(ref MENUITEMINFO menuItemInfo)
{
// Set the mask to the type only, and the type to the separator type.
menuItemInfo.fMask = (uint)MIIM.MIIM_TYPE;
menuItemInfo.fType = (uint)MFT.MFT_SEPARATOR;
}
internal static extern bool InsertMenuItem(IntPtr hMenu, uint uItem, bool fByPosition,
[In] ref MENUITEMINFO lpmii);