public MenuItemInfo GetItemInfo(int commandId)
{
var result = MENUITEMINFO.Create();
result.fMask = MIIM.MIIM_BITMAP;
MenuNativeMethods.GetMenuItemInfo(this.popupMenu, (UInt32)commandId, false, ref result);
return(MenuItemInfo.Create(result));
}
private unsafe List <IWindowRef.MenuItemRef> GetMenuItems(IntPtr hMenu, IntPtr rootHandle)
{
// ref: https://stackoverflow.com/questions/18589385/retrieve-list-of-menu-items-in-windows-in-c
// ref: https://stackoverflow.com/questions/22852461/win32-api-getmenuiteminfo-returns-only-the-first-character-of-the-item-text
int nCount = GetMenuItemCount(hMenu);
if (nCount <= 0)
{
return(null);
}
MenuMembersMask fMask = MenuMembersMask.MIIM_SUBMENU | MenuMembersMask.MIIM_FTYPE | MenuMembersMask.MIIM_ID | MenuMembersMask.MIIM_STRING;
List <IWindowRef.MenuItemRef> list = new List <IWindowRef.MenuItemRef>();
MENUITEMINFO mii = new MENUITEMINFO();
for (uint i = 0; i < nCount; i++)
{
MENUITEMINFO mif = mii.Create();
mif.dwTypeData = null;
mif.fMask = fMask;
if (!GetMenuItemInfo(hMenu, i, true, ref mif))
{
throw new Win32Exception();
}
switch (mif.fType)
{
case MenuItemType.MFT_SEPARATOR:
list.Add(new IWindowRef.MenuItemRef {
Index = i, IsSeparator = true
});
break;
case MenuItemType.MFT_STRING:
if (mif.cch <= 0)
{
break;
}
//if (rootHandle == IntPtr.Zero)
//{
// Debug.WriteLine("{0} is zero, default is {1}", rootHandle, hMenu);
//}
IWindowRef.MenuItemRef item = new IWindowRef.MenuItemRef
{
RootMenuHandle = rootHandle == IntPtr.Zero ? hMenu : rootHandle,
MenuHandle = hMenu,
Ref = mif.wID,
Index = i,
IsSeparator = false
};
mif.cch++;
IntPtr szString = Marshal.AllocHGlobal((IntPtr)(sizeof(char) * mif.cch));
//IntPtr szString = Marshal.StringToHGlobalUni(new string('\0', mif.cch));
mif.dwTypeData = (char *)szString.ToPointer();
try
{
if (!GetMenuItemInfo(hMenu, i, true, ref mif))
{
throw new Win32Exception();
}
item.Label = Marshal.PtrToStringUni(szString);
}
finally
{
Marshal.FreeHGlobal(szString);
}
if (mif.hSubMenu != null)
{
item.SubMenu = new IWindowRef.MenuRef
{
Ref = mif.hSubMenu,
Items = GetMenuItems(mif.hSubMenu, item.RootMenuHandle)
};
}
list.Add(item);
break;
default:
break;
}
}
return(list);
}