/// <summary>
/// Runs the dialog.
/// </summary>
/// <param name="hWndOwner">The h WND owner.</param>
/// <returns></returns>
protected override bool RunDialog(
IntPtr hWndOwner )
{
IntPtr ptr1 = IntPtr.Zero;
bool flag1 = false;
Win32.Shell32.SHGetSpecialFolderLocation( hWndOwner, (int)this.rootFolder, ref ptr1 );
if ( ptr1 == IntPtr.Zero )
{
Win32.Shell32.SHGetSpecialFolderLocation( hWndOwner, 0, ref ptr1 );
if ( ptr1 == IntPtr.Zero )
{
throw new InvalidOperationException( "ExtendedFolderBrowserDialogNoRootFolder" );
}
}
int flags = 0x40;
if ( !this.showNewFolderButton )
{
flags += 0x200;
}
if ( this.showEditBox )
{
flags += Win32.BIF_EDITBOX;
}
if ( Control.CheckForIllegalCrossThreadCalls && (Application.OleRequired() != ApartmentState.STA) )
{
throw new ThreadStateException( "ThreadMustBeSTA" );
}
IntPtr ptr2 = IntPtr.Zero;
IntPtr ptr3 = IntPtr.Zero;
IntPtr ptr4 = IntPtr.Zero;
try
{
Win32.BROWSEINFO browseinfo1 = new Win32.BROWSEINFO();
ptr3 = Marshal.AllocHGlobal( (int)(260 * Marshal.SystemDefaultCharSize) );
ptr4 = Marshal.AllocHGlobal( (int)(260 * Marshal.SystemDefaultCharSize) );
Win32.BrowseCallbackProc proc1 = new Win32.BrowseCallbackProc(
this.ExtendedFolderBrowserDialog_BrowseCallbackProc );
browseinfo1.pidlRoot = ptr1;
browseinfo1.hwndOwner = hWndOwner;
browseinfo1.pszDisplayName = ptr3;
browseinfo1.lpszTitle = this.descriptionText;
browseinfo1.ulFlags = flags;
browseinfo1.lpfn = proc1;
browseinfo1.lParam = IntPtr.Zero;
browseinfo1.iImage = 0;
ptr2 = Win32.Shell32.SHBrowseForFolder( browseinfo1 );
if ( ptr2 != IntPtr.Zero )
{
Win32.Shell32.SHGetPathFromIDList( ptr2, ptr4 );
this.selectedPathNeedsCheck = true;
this.selectedPath = Marshal.PtrToStringAuto( ptr4 );
flag1 = true;
}
}
finally
{
Win32.IMalloc malloc1 = GetSHMalloc();
malloc1.Free( ptr1 );
if ( ptr2 != IntPtr.Zero )
{
malloc1.Free( ptr2 );
}
if ( ptr4 != IntPtr.Zero )
{
Marshal.FreeHGlobal( ptr4 );
}
if ( ptr3 != IntPtr.Zero )
{
Marshal.FreeHGlobal( ptr3 );
}
}
return flag1;
}
protected override bool RunDialog(
IntPtr hWndOwner)
{
var ptr1 = IntPtr.Zero;
var flag1 = false;
Win32.Shell32.SHGetSpecialFolderLocation(hWndOwner, (int)_rootFolder, ref ptr1);
if (ptr1 == IntPtr.Zero)
{
Win32.Shell32.SHGetSpecialFolderLocation(hWndOwner, 0, ref ptr1);
if (ptr1 == IntPtr.Zero)
{
throw new InvalidOperationException("ExtendedFolderBrowserDialogNoRootFolder");
}
}
var flags = 0x40;
if (!ShowNewFolderButton)
{
flags += 0x200;
}
if (ShowEditBox)
{
flags += Win32.BIF_EDITBOX;
}
if (Control.CheckForIllegalCrossThreadCalls && (Application.OleRequired() != ApartmentState.STA))
{
throw new ThreadStateException("ThreadMustBeSTA");
}
var ptr2 = IntPtr.Zero;
var ptr3 = IntPtr.Zero;
var ptr4 = IntPtr.Zero;
try
{
var browseinfo1 = new Win32.BROWSEINFO();
ptr3 = Marshal.AllocHGlobal(260 * Marshal.SystemDefaultCharSize);
ptr4 = Marshal.AllocHGlobal(260 * Marshal.SystemDefaultCharSize);
Win32.BrowseCallbackProc proc1 =
extendedFolderBrowserDialogBrowseCallbackProc;
browseinfo1.pidlRoot = ptr1;
browseinfo1.hwndOwner = hWndOwner;
browseinfo1.pszDisplayName = ptr3;
browseinfo1.lpszTitle = _descriptionText;
browseinfo1.ulFlags = flags;
browseinfo1.lpfn = proc1;
browseinfo1.lParam = IntPtr.Zero;
browseinfo1.iImage = 0;
ptr2 = Win32.Shell32.SHBrowseForFolder(browseinfo1);
if (ptr2 != IntPtr.Zero)
{
Win32.Shell32.SHGetPathFromIDList(ptr2, ptr4);
_selectedPathNeedsCheck = true;
_selectedPath = Marshal.PtrToStringAuto(ptr4);
flag1 = true;
}
}
finally
{
var malloc1 = getShMalloc();
malloc1.Free(ptr1);
if (ptr2 != IntPtr.Zero)
{
malloc1.Free(ptr2);
}
if (ptr4 != IntPtr.Zero)
{
Marshal.FreeHGlobal(ptr4);
}
if (ptr3 != IntPtr.Zero)
{
Marshal.FreeHGlobal(ptr3);
}
_nativeWindow?.ReleaseHandle();
}
return(flag1);
}
