protected override bool RunDialog(IntPtr hWndOwner)
{
IntPtr zero = IntPtr.Zero;
bool flag = false;
NativeMethods.SHGetSpecialFolderLocation(hWndOwner, (int)this.rootFolder, ref zero);
if (zero == IntPtr.Zero)
{
NativeMethods.SHGetSpecialFolderLocation(hWndOwner, 0, ref zero);
if (zero == IntPtr.Zero)
{
throw new InvalidOperationException("FolderBrowserDialogNoRootFolder");
}
}
int num = 0x40;
if (!this.showNewFolderButton)
{
num += 0x200;
}
IntPtr pidl = IntPtr.Zero;
IntPtr hglobal = IntPtr.Zero;
IntPtr pszPath = IntPtr.Zero;
try
{
NativeMethods.BROWSEINFO lpbi = new NativeMethods.BROWSEINFO();
hglobal = Marshal.AllocHGlobal((int)(260 * Marshal.SystemDefaultCharSize));
pszPath = Marshal.AllocHGlobal((int)(260 * Marshal.SystemDefaultCharSize));
this.callback = new BrowseCallbackProc(this.FolderBrowserDialog_BrowseCallbackProc);
lpbi.pidlRoot = zero;
lpbi.hwndOwner = hWndOwner;
lpbi.pszDisplayName = hglobal;
lpbi.lpszTitle = this.descriptionText;
lpbi.ulFlags = num;
lpbi.lpfn = this.callback;
lpbi.lParam = IntPtr.Zero;
lpbi.iImage = 0;
pidl = NativeMethods.SHBrowseForFolder(lpbi);
if (pidl != IntPtr.Zero)
{
NativeMethods.SHGetPathFromIDList(pidl, pszPath);
this.selectedPathNeedsCheck = true;
this.selectedPath = Marshal.PtrToStringAuto(pszPath);
flag = true;
}
}
finally
{
NativeMethods.IMalloc sHMalloc = GetSHMalloc();
sHMalloc.Free(zero);
if (pidl != IntPtr.Zero)
{
sHMalloc.Free(pidl);
}
if (pszPath != IntPtr.Zero)
{
Marshal.FreeHGlobal(pszPath);
}
if (hglobal != IntPtr.Zero)
{
Marshal.FreeHGlobal(hglobal);
}
this.callback = null;
}
return(flag);
}
protected override bool RunDialog(IntPtr hwndOwner)
{
bool result = false;
IntPtr pidlRoot = IntPtr.Zero,
pszPath = IntPtr.Zero,
pidlSelected = IntPtr.Zero;
SelectedPath = string.Empty;
try
{
if (RootType == RootType.SpecialFolder)
{
NativeMethods.SHGetFolderLocation(hwndOwner, (int)RootSpecialFolder, IntPtr.Zero, 0, out pidlRoot);
}
else // RootType == Path
{
uint iAttribute;
NativeMethods.SHParseDisplayName(RootPath, IntPtr.Zero, out pidlRoot, 0, out iAttribute);
}
var browseInfo = new NativeMethods.BROWSEINFO
{
HwndOwner = hwndOwner,
Root = pidlRoot,
DisplayName = new string(' ', 256),
Title = Title,
Flags = (uint)_dialogOptions,
LParam = 0,
Callback = HookProc
};
// Show dialog
pidlSelected = NativeMethods.SHBrowseForFolder(ref browseInfo);
if (pidlSelected != IntPtr.Zero)
{
result = true;
pszPath = Marshal.AllocHGlobal(260 * Marshal.SystemDefaultCharSize);
NativeMethods.SHGetPathFromIDList(pidlSelected, pszPath);
SelectedPath = Marshal.PtrToStringAuto(pszPath);
}
}
finally // release all unmanaged resources
{
NativeMethods.IMalloc malloc = NativeMethods.GetSHMalloc();
if (pidlRoot != IntPtr.Zero)
{
malloc.Free(pidlRoot);
}
if (pidlSelected != IntPtr.Zero)
{
malloc.Free(pidlSelected);
}
if (pszPath != IntPtr.Zero)
{
Marshal.FreeHGlobal(pszPath);
}
Marshal.ReleaseComObject(malloc);
}
return(result);
}
private static NativeMethods.IMalloc GetSHMalloc()
{
NativeMethods.IMalloc[] ppMalloc = new NativeMethods.IMalloc[1];
NativeMethods.SHGetMalloc(ppMalloc);
return(ppMalloc[0]);
}
protected override Boolean RunDialog(IntPtr hwndOwner)
{
Boolean result = false;
IntPtr pidlRoot = IntPtr.Zero,
pszPath = IntPtr.Zero,
pidlSelected = IntPtr.Zero;
try
{
if (RootType == DialogFolderType.SpecialFolder)
{
NativeMethods.ShellGetFolderLocation(hwndOwner, (int)RootSpecialFolder, IntPtr.Zero, 0, out pidlRoot);
}
else
{
uint iAttribute;
NativeMethods.ShellParseDisplayName(RootPath, IntPtr.Zero, out pidlRoot, 0, out iAttribute);
}
NativeMethods.BrowseInfo browseInfo = new NativeMethods.BrowseInfo
{
HwndOwner = hwndOwner,
Root = pidlRoot,
DisplayName = new String(' ', 256),
Title = Title,
Flags = (uint)_dialogOptions,
LParam = 0,
Callback = new NativeMethods.WndProc(HookProc)
};
// Show dialog
pidlSelected = NativeMethods.ShellBrowseForFolder(ref browseInfo);
if (pidlSelected != IntPtr.Zero)
{
result = true;
pszPath = Marshal.AllocHGlobal((int)(260 * Marshal.SystemDefaultCharSize));
NativeMethods.ShellGetPathFromIDList(pidlSelected, pszPath);
SelectedPath = Marshal.PtrToStringAuto(pszPath);
}
}
finally
{
NativeMethods.IMalloc malloc = NativeMethods.GetShMalloc();
if (pidlRoot != IntPtr.Zero)
{
malloc.Free(pidlRoot);
}
if (pidlSelected != IntPtr.Zero)
{
malloc.Free(pidlSelected);
}
if (pszPath != IntPtr.Zero)
{
Marshal.FreeHGlobal(pszPath);
}
Marshal.ReleaseComObject(malloc);
}
return(result);
}
