public static string GetDirectoryViaBrowseDialog(this IVsUIShell2 shell, IntPtr parentWindow, Guid persistenceSlot, string title, string initialDirectory, bool overridePersistedInitialDirectory)
{
if (shell == null)
{
throw new ArgumentNullException("shell");
}
if (title == null)
{
throw new ArgumentNullException("title");
}
const int MaxDirName = 10000;
IntPtr dirNameBuffer = Marshal.AllocCoTaskMem((MaxDirName + 1) * sizeof(char));
try
{
VSBROWSEINFOW[] browse = new VSBROWSEINFOW[]
{
new VSBROWSEINFOW
{
pwzDlgTitle = title,
dwFlags = (uint)BrowseInfoFlags.ReturnOnlyFileSystemDirectories,
hwndOwner = parentWindow,
pwzInitialDir = GetInitialDirectoryToUse(initialDirectory, overridePersistedInitialDirectory, persistenceSlot),
nMaxDirName = MaxDirName,
lStructSize = (uint)Marshal.SizeOf(typeof(VSBROWSEINFOW)),
pwzDirName = dirNameBuffer,
dwHelpTopic = 0
}
};
string helpTopic = string.Empty;
string openButtonLabel = null;
string ceilingDir = null;
VSNSEBROWSEINFOW[] nseBrowseInfo = null;
ErrorHandler.ThrowOnFailure(shell.GetDirectoryViaBrowseDlgEx(browse, helpTopic, openButtonLabel, ceilingDir, nseBrowseInfo));
string folder = Marshal.PtrToStringUni(browse[0].pwzDirName);
if (!string.IsNullOrEmpty(folder))
{
PersistLastUseDirectory(persistenceSlot, folder);
}
return(folder);
}
catch (COMException ex) when(ex.ErrorCode == VSConstants.OLE_E_PROMPTSAVECANCELLED)
{
}
finally
{
if (dirNameBuffer != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(dirNameBuffer);
dirNameBuffer = IntPtr.Zero;
}
}
return(null);
}
private static string GetCommandText(IntPtr structPtr)
{
if (structPtr == IntPtr.Zero)
{
return(string.Empty);
}
OLECMDTEXT olecmdtext = (OLECMDTEXT)Marshal.PtrToStructure(structPtr, typeof(OLECMDTEXT));
if (olecmdtext.cwActual == 0)
{
return(string.Empty);
}
IntPtr offset = Marshal.OffsetOf(typeof(OLECMDTEXT), "rgwz");
IntPtr ptr = (IntPtr)((long)structPtr + (long)offset);
return(Marshal.PtrToStringUni(ptr, (int)olecmdtext.cwActual - 1));
}
/// <summary>
/// Gets content of the system clipboard.
/// </summary>
/// <param name="dataType">The type of the text data in the clipboard</param>
/// <returns>Text content retrieved from the clipboard if available. Otherwise null.</returns>
/// <remarks>
/// <para>
/// This method gets text from the system clipboard.
/// If stored text data is a special format (line or rectangle,)
/// its data type will be set to <paramref name="dataType"/> parameter.
/// </para>
/// </remarks>
/// <seealso cref="Sgry.Azuki.TextDataType">TextDataType enum</seealso>
public string GetClipboardText(out TextDataType dataType)
{
Int32 rc; // result code
bool clipboardOpened = false;
IntPtr dataHandle = IntPtr.Zero;
IntPtr dataPtr = IntPtr.Zero;
uint formatID = UInt32.MaxValue;
string data = null;
dataType = TextDataType.Normal;
try
{
// open clipboard
rc = WinApi.OpenClipboard(IntPtr.Zero);
if (rc == 0)
{
return(null);
}
clipboardOpened = true;
// distinguish type of data in the clipboard
if (WinApi.IsClipboardFormatAvailable(_CF_LINEOBJECT) != 0)
{
formatID = WinApi.CF_UNICODETEXT;
dataType = TextDataType.Line;
}
else if (WinApi.IsClipboardFormatAvailable(_CF_RECTSELECT) != 0)
{
formatID = WinApi.CF_UNICODETEXT;
dataType = TextDataType.Rectangle;
}
else if (WinApi.IsClipboardFormatAvailable(WinApi.CF_UNICODETEXT) != 0)
{
formatID = WinApi.CF_UNICODETEXT;
}
else if (WinApi.IsClipboardFormatAvailable(WinApi.CF_TEXT) != 0)
{
formatID = WinApi.CF_TEXT;
}
if (formatID == UInt32.MaxValue)
{
return(null); // no text data was in clipboard
}
// get handle of the clipboard data
dataHandle = WinApi.GetClipboardData(formatID);
if (dataHandle == IntPtr.Zero)
{
return(null);
}
// get data pointer by locking the handle
dataPtr = Utl.MyGlobalLock(dataHandle);
if (dataPtr == IntPtr.Zero)
{
return(null);
}
// retrieve data
if (formatID == WinApi.CF_TEXT)
{
data = Utl.MyPtrToStringAnsi(dataPtr);
}
else
{
data = Marshal.PtrToStringUni(dataPtr);
}
}
finally
{
// unlock handle
if (dataPtr != IntPtr.Zero)
{
Utl.MyGlobalUnlock(dataHandle);
}
if (clipboardOpened)
{
WinApi.CloseClipboard();
}
}
return(data);
}
