/// <summary>
/// Internally saves the icon to the specified stream.
/// </summary>
/// <param name="stream">Stream to save.</param>
/// <returns>True if successful.</returns>
/// <remarks></remarks>
private bool _internalSaveToStream(Stream stream)
{
bool _internalSaveToStreamRet = default;
var bl = new SafePtr();
int f = Marshal.SizeOf(_dir);
int g = Marshal.SizeOf <ICONDIRENTRY>();
_dir.nImages = (short)_entries.Count;
_dir.wIconType = IconImageType.Icon;
_dir.wReserved = 0;
// get the index to the first image's image data
int offset = f + g * _dir.nImages;
bl = bl + FileTools.StructToBytes(_dir);
foreach (var e in _entries)
{
e._entry.dwOffset = offset;
bl = bl + FileTools.StructToBytes(e._entry);
offset += e._entry.dwImageSize;
}
foreach (var e in _entries)
{
bl = bl + e._image;
}
// write the icon file
stream.Write((byte[])bl, 0, (int)bl.Length);
stream.Close();
bl.Dispose();
_internalSaveToStreamRet = true;
return(_internalSaveToStreamRet);
}
/// <summary>
/// Internal load from bytes.
/// </summary>
/// <param name="bytes"></param>
/// <returns></returns>
/// <remarks></remarks>
private bool _internalLoadFromBytes(byte[] bytes)
{
bool _internalLoadFromBytesRet = default;
SafePtr mm = (SafePtr)bytes;
_internalLoadFromBytesRet = _internalLoadFromPtr(mm);
mm.Dispose();
return(_internalLoadFromBytesRet);
}
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>
/// 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);
}
private bool disposedValue; // To detect redundant calls
// IDisposable
protected virtual void Dispose(bool disposing)
{
if (!disposedValue)
{
if (disposing)
{
if (_mem is object)
{
_mem.Dispose();
}
}
}
disposedValue = true;
}
/// <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);
}
