public PreviewImageDialogViewModel(Bitmap sourceBitmap)
{
this.sourceBitmap = sourceBitmap;
sourceBitmapGdi = sourceBitmap.GetHbitmapHandle();
imageWidth = 100;
imageHeight = 100;
sourceRect = new Int32Rect(0, 0, sourceBitmap.Width, sourceBitmap.Height / 6);
destRect = new Int32Rect(0, 0, (int)ImageWidth, (int)ImageHeight);
sizingMargins = new Int32Rect(6, 5, 6, 5);
drawOption = 4;
RenderImage();
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
var isActivated = (bool)value;
var img = isActivated ? Resources.Img_Deactivate_48 : Resources.Img_Activate_48;
using (img)
{
using (var handle = new SafeBitmapHandle(img.GetHbitmap(), true))
{
var result = Imaging.CreateBitmapSourceFromHBitmap(
handle.DangerousGetHandle(),
IntPtr.Zero,
Int32Rect.Empty,
BitmapSizeOptions.FromEmptyOptions());
return result;
}
}
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
var isActivated = (bool)value;
var img = isActivated ? Resources.Img_Deactivate_48 : Resources.Img_Activate_48;
using (img)
{
using (var handle = new SafeBitmapHandle(img.GetHbitmap(), true))
{
var result = Imaging.CreateBitmapSourceFromHBitmap(
handle.DangerousGetHandle(),
IntPtr.Zero,
Int32Rect.Empty,
BitmapSizeOptions.FromEmptyOptions());
return(result);
}
}
}
public DialogResult ShowDialog(IWin32Window owner)
{
if (String.IsNullOrEmpty(_targetName))
{
throw new ArgumentNullException("TargetName");
}
DialogResult result;
int passwordMaxLength = CREDUI_MAX_PASSWORD_LENGTH + 1;
StringBuilder username = new StringBuilder(_userName, CREDUI_MAX_USERNAME_LENGTH);
SafeBitmapHandle banner = _banner != null ? new SafeBitmapHandle(_banner.GetHbitmap(), true) : new SafeBitmapHandle(IntPtr.Zero, false);
SafeUnmanagedBuffer password = new SafeUnmanagedBuffer(passwordMaxLength * sizeof(char));
for (int i = 0; i < sizeof(char); i++)
{
password[i] = 0;
}
CheckNotDisposed();
var info = new NativeMethods.CREDUI_INFO()
{
hwndParent = owner != null ? owner.Handle : IntPtr.Zero,
hbmBanner = banner.DangerousGetHandle(),
pszCaptionText = _caption,
pszMessageText = _message
};
info.cbSize = Marshal.SizeOf(info);
try
{
var nativeResult = NativeMethods.CredUIPromptForCredentials(ref info, _targetName, IntPtr.Zero, 0,
username, CRED_MAX_USERNAME_LENGTH,
new HandleRef(password, password.DangerousGetHandle()), passwordMaxLength,
ref _saveChecked, _options);
/*IntPtr outBuffer;
* uint authPackage = 0;
* uint outBufferSize;
* info.hbmBanner = IntPtr.Zero;
* nativeResult = NativeMethods.CredUIPromptForWindowsCredentials(ref info, 0, ref authPackage, new HandleRef(null, IntPtr.Zero), 0, out outBuffer, out outBufferSize, ref _saveChecked,
* 0x1 | 0x200);
*
* int nameLen = 0, passLen = 0, dNameLength = 0;
* NativeMethods.CredUnPackAuthenticationBuffer(0, outBuffer, (int)outBufferSize, null, ref nameLen, null, ref dNameLength, null, ref passLen);
* StringBuilder sName = new StringBuilder(nameLen), sPass = new StringBuilder(passLen), dName = new StringBuilder(dNameLength);
* bool pos = NativeMethods.CredUnPackAuthenticationBuffer(0, outBuffer, (int)outBufferSize, sName, ref nameLen,
* dName, ref dNameLength, sPass, ref passLen);
*
*
* var b = new SafeCoUnmanagedBuffer(outBuffer, checked((int)outBufferSize), true);
*
* string s = Marshal.PtrToStringUni(outBuffer);*/
switch (nativeResult)
{
case NativeMethods.CredUIReturnCodes.NO_ERROR:
_userName = username.ToString();
Password.Clear();
byte[] unicodeBytes = new byte[sizeof(char)];
char currentChar = Char.MaxValue;
for (int i = 0; ;)
{
for (int j = 0; j < sizeof(char); j++)
{
unicodeBytes[j] = password[i];
password[i++] = 0;
}
if ((currentChar = Encoding.Unicode.GetChars(unicodeBytes)[0]) != '\0')
{
Password.AppendChar(currentChar);
}
else
{
break;
}
}
result = DialogResult.OK;
break;
case NativeMethods.CredUIReturnCodes.ERROR_CANCELLED:
result = DialogResult.Cancel;
break;
default:
throw new Win32Exception((int)nativeResult);
}
}
finally
{
banner.Dispose();
password.Dispose();
}
return(result);
}