/// <summary>
/// Format a given system error, or the last system error by default.
/// </summary>
/// <param name="syserror">Format code to pass. GetLastError is used as by default.</param>
/// <returns></returns>
/// <remarks></remarks>
public static string FormatLastError(uint syserror = 0U)
{
uint err = syserror == 0L ? (uint)User32.GetLastError() : syserror;
var mm = new SafePtr();
string s;
mm.Length = 1026L;
mm.ZeroMemory();
User32.FormatMessage(0x1000, IntPtr.Zero, err, 0U, mm.handle, 512U, IntPtr.Zero);
s = "Error &H" + err.ToString("X8") + ": " + mm.ToString();
mm.Dispose();
return(s);
}
public static string GetMenuItemText(IntPtr hMenu, int itemId, bool byPos = true)
{
var mii = new MENUITEMINFO();
var mm = new SafePtr();
mii.cbSize = Marshal.SizeOf(mii);
mii.cch = 0;
mii.fMask = User32.MIIM_TYPE;
User32.GetMenuItemInfo(hMenu, itemId, byPos, ref mii);
mm.Length = (mii.cch + 1) * sizeof(char);
mii.cch += 1;
mii.dwTypeData = mm.handle;
if (User32.GetMenuItemInfo(hMenu, itemId, byPos, ref mii) == 0)
{
int err = User32.GetLastError();
mm.Length = 1026L;
mm.ZeroMemory();
User32.FormatMessage(0x1000U, IntPtr.Zero, (uint)err, 0U, mm.handle, 512U, IntPtr.Zero);
mm.Dispose();
return(null);
}
if ((mii.fType & User32.MFT_SEPARATOR) == User32.MFT_SEPARATOR)
{
return("-");
}
else
{
string s;
s = mm.ToString();
mm.Dispose();
return(s);
}
}
/// <summary>
/// Copy a native hMenu and all its contents into a managed Menu object
/// </summary>
/// <param name="hMenu"></param>
/// <param name="destItem"></param>
/// <returns></returns>
/// <remarks></remarks>
public static bool MenuItemCopyToManaged(IntPtr hMenu, int itemId, ref ToolStripMenuItem destItem, bool byPos = true)
{
var mii = new MENUITEMINFO();
Bitmap bmp;
var mm = new SafePtr();
if (destItem is null)
{
destItem = new ToolStripMenuItem();
}
mii.cbSize = Marshal.SizeOf(mii);
mii.cch = 0;
mii.fMask = User32.MIIM_TYPE;
User32.GetMenuItemInfo(hMenu, itemId, byPos, ref mii);
mm.Length = (mii.cch + 1) * sizeof(char);
mii.cch += 1;
mii.dwTypeData = mm.handle;
if (User32.GetMenuItemInfo(hMenu, itemId, byPos, ref mii) == 0)
{
int err = User32.GetLastError();
mm.Length = 1026L;
mm.ZeroMemory();
User32.FormatMessage(0x1000U, IntPtr.Zero, (uint)err, 0U, mm.handle, 512U, IntPtr.Zero);
mm.Dispose();
return(false);
}
if ((mii.fType & User32.MFT_SEPARATOR) == User32.MFT_SEPARATOR)
{
destItem.Text = "-";
}
else
{
destItem.Text = mm.ToString();
}
mm.Dispose();
mii.fMask = User32.MIIM_BITMAP;
User32.GetMenuItemInfo(hMenu, itemId, byPos, ref mii);
if (mii.hbmpItem != IntPtr.Zero)
{
bmp = Image.FromHbitmap(mii.hbmpItem);
destItem.Image = bmp;
}
mii.fMask = User32.MIIM_STATE;
User32.GetMenuItemInfo(hMenu, itemId, byPos, ref mii);
if ((mii.fState & User32.MFS_CHECKED) == User32.MFS_CHECKED)
{
destItem.CheckState = CheckState.Checked;
}
if ((mii.fState & User32.MFS_DISABLED) == User32.MFS_DISABLED)
{
destItem.Enabled = false;
}
if ((mii.fState & User32.MFS_DEFAULT) == User32.MFS_DEFAULT)
{
destItem.Font = new Font(destItem.Font.Name, destItem.Font.Size, FontStyle.Bold);
}
mii.fMask = User32.MIIM_SUBMENU;
User32.GetMenuItemInfo(hMenu, itemId, byPos, ref mii);
if (mii.hSubMenu != IntPtr.Zero)
{
return(MenuItemsToManaged(mii.hSubMenu, destItem.DropDownItems));
}
return(true);
}