public void UpdateMenu(SystemMenuItem menuItem)
{
var mii = new MENUITEMINFO
{
fMask = MIIM_CHECKMARKS | MIIM_DATA | MIIM_FTYPE | MIIM_ID | MIIM_STATE | MIIM_STRING
};
mii.cbSize = (uint)Marshal.SizeOf(mii);
PInvokeUtils.Try(() => GetMenuItemInfo(_hSysMenu, menuItem.Id, false, ref mii));
if (menuItem.Enabled)
{
mii.fState &= (~MFS_DISABLED); // clear "disabled" flag
}
else
{
mii.fState |= MFS_DISABLED; // set "disabled" flag
}
if (menuItem.Checked)
{
mii.fState |= MFS_CHECKED; // set "checked" flag
}
else
{
mii.fState &= (~MFS_CHECKED); // clear "checked" flag
}
mii.fMask = MIIM_STATE;
PInvokeUtils.Try(() => SetMenuItemInfo(_hSysMenu, menuItem.Id, false, ref mii));
// TODO: From my observations, this function always returns false, even though it appears to succeed.
// Am I using it incorrectly?
DrawMenuBar(_hSysMenu);
}
public SystemMenuItem CreateMenuItem(string text = null, EventHandler clickHandler = null)
{
var menuItem = new SystemMenuItem(_menuItemIdCounter++)
{
Text = text
};
if (clickHandler != null)
{
menuItem.Clicked += clickHandler;
}
return(menuItem);
}
public void InsertMenu(uint position, SystemMenuItem menuItem)
{
PInvokeUtils.Try(() => InsertMenu(_hSysMenu, position, MF_BYPOSITION | MF_STRING, menuItem.Id, menuItem.Text));
_items.Add(menuItem);
}
public void AppendMenu(SystemMenuItem menuItem)
{
PInvokeUtils.Try(() => AppendMenu(_hSysMenu, MF_STRING, menuItem.Id, menuItem.Text));
_items.Add(menuItem);
}