private static unsafe void SetText(IntPtr pCmdTextInt, string text)
{
OLECMDTEXT *pText = (OLECMDTEXT *)pCmdTextInt;
// If, for some reason, we don't get passed an array, we should just bail
if (pText->cwBuf == 0)
{
return;
}
fixed(char *pinnedText = text)
{
char *src = pinnedText;
char *dest = (char *)(&pText->rgwz);
// Don't copy too much, and make sure to reserve space for the terminator
int length = Math.Min(text.Length, (int)pText->cwBuf - 1);
for (int i = 0; i < length; i++)
{
*dest++ = *src++;
}
// Add terminating NUL
*dest = '\0';
pText->cwActual = (uint)length;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="OleCommandText"/> class from the specified pointer.
/// </summary>
/// <param name="oleCmdText">A pointer to the <see cref="OLECMDTEXT"/> structure in unmanaged memory.</param>
/// <exception cref="ArgumentNullException">
/// If <paramref name="oleCmdText"/> is <see cref="IntPtr.Zero"/>.
/// </exception>
private unsafe OleCommandText(OLECMDTEXT *oleCmdText)
{
if (oleCmdText == null)
{
throw new ArgumentNullException(nameof(oleCmdText));
}
_oleCmdText = oleCmdText;
}
private static unsafe string GetText(IntPtr pCmdTextInt)
{
if (pCmdTextInt == IntPtr.Zero)
{
return(string.Empty);
}
OLECMDTEXT *pText = (OLECMDTEXT *)pCmdTextInt;
// Punt early if there is no text in the structure.
if (pText->cwActual == 0)
{
return(string.Empty);
}
return(new string((char *)&pText->rgwz, 0, (int)pText->cwActual));
}
public HRESULT QueryStatus([NativeTypeName("const GUID *")] Guid *pguidCmdGroup, [NativeTypeName("ULONG")] uint cCmds, [NativeTypeName("OLECMD []")] OLECMD *prgCmds, OLECMDTEXT *pCmdText)
{
return(((delegate * unmanaged <IOleCommandTarget *, Guid *, uint, OLECMD *, OLECMDTEXT *, int>)(lpVtbl[3]))((IOleCommandTarget *)Unsafe.AsPointer(ref this), pguidCmdGroup, cCmds, prgCmds, pCmdText));
}
/// <summary>
/// Initializes a new instance of the <see cref="OleCommandText"/> class from the specified pointer.
/// </summary>
/// <param name="oleCmdText">A pointer to the <see cref="OLECMDTEXT"/> structure in unmanaged memory.</param>
/// <exception cref="ArgumentNullException">
/// If <paramref name="oleCmdText"/> is <see cref="IntPtr.Zero"/>.
/// </exception>
private unsafe OleCommandText(OLECMDTEXT* oleCmdText)
{
Contract.Requires<ArgumentNullException>(oleCmdText != null, "oleCmdText");
_oleCmdText = oleCmdText;
}
/// <summary>
/// Initializes a new instance of the <see cref="OleCommandText"/> class from the specified pointer.
/// </summary>
/// <param name="oleCmdText">A pointer to the <see cref="OLECMDTEXT"/> structure in unmanaged memory.</param>
/// <exception cref="ArgumentNullException">
/// If <paramref name="oleCmdText"/> is <see cref="IntPtr.Zero"/>.
/// </exception>
private unsafe OleCommandText(OLECMDTEXT *oleCmdText)
{
Contract.Requires <ArgumentNullException>(oleCmdText != null, "oleCmdText");
_oleCmdText = oleCmdText;
}