private void ResizeCustomControl(IntPtr hWnd, InteropUtil.RECT rect, params IntPtr[] buttons)
{
DialogBrowsingUtilities.Assume(buttons != null && buttons.Length > 0);
hWnd.AssumeNonZero();
InteropUtil.WINDOWPLACEMENT wndLoc = hWnd.GetWindowPlacement();
wndLoc.Right = rect.right;
hWnd.SetWindowPlacement(ref wndLoc);
foreach (IntPtr hBtn in buttons)
{
m_calcPosMap[hBtn.GetDlgCtrlID()](this, rect.right, out int btnRight, out int btnWidth);
PositionButton(hBtn, btnRight, btnWidth);
}
IntPtr hRgn = InteropUtil.CreateRectRgnIndirect(ref rect);
try
{
if (hWnd.SetWindowRgn(hRgn, true) == 0)
{
//setting the region failed, so we need to delete the region we created above.
hRgn.DeleteObject();
}
}
catch
{
if (hRgn != IntPtr.Zero)
{
hRgn.DeleteObject();
}
}
}
protected override bool RunDialog(IntPtr hwndOwner)
{
DialogBrowsingUtilities.Assume(Marshal.SystemDefaultCharSize == 2, "The character size should be 2");
IntPtr nativeBuffer = Marshal.AllocCoTaskMem(InteropUtil.NumberOfFileChars * 2);
IntPtr filterBuffer = IntPtr.Zero;
try
{
InteropUtil.OpenFileName openFileName = new InteropUtil.OpenFileName();
openFileName.Initialize();
openFileName.hwndOwner = hwndOwner;
char[] chars = new char[InteropUtil.NumberOfFileChars];
try
{
if (File.Exists(Path))
{
if (AcceptFiles)
{
string fileName = System.IO.Path.GetFileName(Path);
int length = Math.Min(fileName.Length, InteropUtil.NumberOfFileChars);
fileName.CopyTo(0, chars, 0, length);
openFileName.lpstrInitialDir = System.IO.Path.GetDirectoryName(Path);
}
else
{
openFileName.lpstrInitialDir = System.IO.Path.GetDirectoryName(Path);
}
}
else if (Directory.Exists(Path))
{
openFileName.lpstrInitialDir = Path;
}
else
{
InitializePathDNE(Path, out openFileName.lpstrInitialDir, out string pathToShow);
pathToShow = pathToShow ?? "";
int length = Math.Min(pathToShow.Length, InteropUtil.NumberOfFileChars);
pathToShow.CopyTo(0, chars, 0, length);
}
}
catch
{
}
Marshal.Copy(chars, 0, nativeBuffer, chars.Length);
openFileName.lpstrFile = nativeBuffer;
if (!AcceptFiles)
{
string str = string.Format("Folders\0*.{0}-{1}\0\0", Guid.NewGuid().ToString("N"), Guid.NewGuid().ToString("N"));
filterBuffer = openFileName.lpstrFilter = Marshal.StringToCoTaskMemUni(str);
}
else
{
openFileName.lpstrFilter = IntPtr.Zero;
}
openFileName.nMaxCustFilter = 0;
openFileName.nFilterIndex = 0;
openFileName.nMaxFile = InteropUtil.NumberOfFileChars;
openFileName.nMaxFileTitle = 0;
openFileName.lpstrTitle = Title;
openFileName.lpfnHook = m_hookDelegate;
openFileName.templateID = InteropUtil.IDD_CustomOpenDialog;
openFileName.hInstance = Marshal.GetHINSTANCE(typeof(OpenFileOrFolderDialog).Module);
openFileName.Flags =
InteropUtil.OFN_DONTADDTORECENT |
InteropUtil.OFN_ENABLEHOOK |
InteropUtil.OFN_ENABLESIZING |
InteropUtil.OFN_NOTESTFILECREATE |
InteropUtil.OFN_EXPLORER |
InteropUtil.OFN_FILEMUSTEXIST |
InteropUtil.OFN_PATHMUSTEXIST |
InteropUtil.OFN_NODEREFERENCELINKS |
InteropUtil.OFN_ENABLETEMPLATE |
(ShowReadOnly ? 0 : InteropUtil.OFN_HIDEREADONLY);
m_useCurrentDir = false;
bool ret = InteropUtil.GetOpenFileNameW(ref openFileName);
//var extErrpr = InteropUtil.CommDlgExtendedError();
//InteropUtil.CheckForWin32Error();
if (m_useCurrentDir)
{
Path = m_currentFolder;
return(true);
}
else if (ret)
{
Marshal.Copy(nativeBuffer, chars, 0, chars.Length);
int firstZeroTerm = ((IList)chars).IndexOf('\0');
if (firstZeroTerm >= 0 && firstZeroTerm <= chars.Length - 1)
{
Path = new string(chars, 0, firstZeroTerm);
}
}
return(ret);
}
finally
{
Marshal.FreeCoTaskMem(nativeBuffer);
if (filterBuffer != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(filterBuffer);
}
}
}