/// <summary>
/// Looks-up a HTheme handle.
/// </summary>
/// <param name="windowClass"></param>
/// <returns></returns>
private IntPtr GetHTheme(string windowClass)
{
IntPtr hTheme;
if (!themeHandles.TryGetValue(windowClass, out hTheme))
{
if (vistaExplorerThemeOwner == null)
{
vistaExplorerThemeOwner = new Control();
vistaExplorerThemeOwner.CreateControl();
UXTheme.SetWindowTheme(vistaExplorerThemeOwner.Handle, Explorer, null);
}
//special case for TreeView and ListView classes
//load Vista's Explorer theme if needed
IntPtr handle = IntPtr.Zero;
string classToLower = windowClass.ToLower();
if (classToLower == VisualStyleElement.TreeView.Item.Normal.ClassName.ToLower() ||
classToLower == VisualStyleElement.ListView.Item.Normal.ClassName.ToLower())
{
handle = vistaExplorerThemeOwner.Handle;
}
hTheme = UXTheme.OpenThemeData(handle, windowClass);
this.themeHandles.Add(windowClass, hTheme);
}
return(hTheme);
}
/// <summary>
/// Sets the specified element as the "Current" for painting.
/// </summary>
/// <param name="element"></param>
/// <returns>True if the element may be painted (there is a theme part defined for it), false otherwise.</returns>
public bool SetCurrentElement(VisualStyleElement element)
{
this.currentHTheme = IntPtr.Zero;
this.currentElement = null;
if (element == null)
{
return(false);
}
IntPtr hTheme = GetHTheme(element.ClassName);
if (hTheme == IntPtr.Zero)
{
return(false);
}
if (!UXTheme.IsThemePartDefined(hTheme, element.Part, 0))
{
return(false);
}
this.currentHTheme = hTheme;
this.currentElement = element;
return(true);
}
public System.Drawing.Color GetThemeColor(ColorProperty color)
{
if (this.currentElement == null || this.currentHTheme == IntPtr.Zero)
{
return(System.Drawing.Color.Empty);
}
int pColor = 0;
UXTheme.GetThemeColor(this.currentHTheme, this.currentElement.Part, this.currentElement.State, (int)color, ref pColor);
return(ColorTranslator.FromWin32(pColor));
}
/// <summary>
/// Gets the Color defined for the current element.
/// </summary>
/// <param name="color"></param>
/// <returns></returns>
public Color GetThemeColor(ColorProperty color)
{
if (this.currentElement == null || currentHTheme == IntPtr.Zero)
{
return(Color.Empty);
}
int themeColor = 0;
UXTheme.GetThemeColor(this.currentHTheme, currentElement.Part, currentElement.State, (int)color, ref themeColor);
return(ColorTranslator.FromWin32(themeColor));
}
public Size GetPartPreferredSize(Graphics g, Rectangle bounds, ThemeSizeType type)
{
if (this.currentElement == null || this.currentHTheme == IntPtr.Zero)
{
return(Size.Empty);
}
RadHdcWrapper radHdcWrapper = new RadHdcWrapper(g, false);
IntPtr hdc = radHdcWrapper.GetHdc();
NativeMethods.SIZE psz = new NativeMethods.SIZE();
UXTheme.GetThemePartSize(this.currentHTheme, hdc, this.currentElement.Part, this.currentElement.State, IntPtr.Zero, type, psz);
radHdcWrapper.Dispose();
return(new Size(psz.cx, psz.cy));
}
public static void DrawTextOnGlass(Graphics graphics, string text, Font font, Rectangle bounds, Color color, TextFormatFlags flags, int rflags)
{
IntPtr primaryHdc = graphics.GetHdc();
IntPtr memoryHdc = NativeMethods.CreateCompatibleDC(new HandleRef(null, primaryHdc));
NativeMethods.BITMAPINFO info = new NativeMethods.BITMAPINFO();
info.bmiHeader_biSize = Marshal.SizeOf(info);
info.bmiHeader_biWidth = bounds.Width;
info.bmiHeader_biHeight = -bounds.Height;
info.bmiHeader_biPlanes = 1;
info.bmiHeader_biBitCount = 32;
info.bmiHeader_biCompression = 0;
IntPtr ppbBits = IntPtr.Zero;
IntPtr dib = NativeMethods.CreateDIBSection(primaryHdc, info, (uint)0, out ppbBits, IntPtr.Zero, (uint)0);
NativeMethods.SelectObject(new HandleRef(null, memoryHdc), new HandleRef(null, dib));
IntPtr fontHandle = font.ToHfont();
NativeMethods.SelectObject(new HandleRef(null, memoryHdc), new HandleRef(null, fontHandle));
System.Windows.Forms.VisualStyles.VisualStyleRenderer renderer = new System.Windows.Forms.VisualStyles.VisualStyleRenderer(System.Windows.Forms.VisualStyles.VisualStyleElement.Window.Caption.Active);
DWMAPI.DTTOPTS dttOpts = new DWMAPI.DTTOPTS();
dttOpts.dwSize = Marshal.SizeOf(typeof(DWMAPI.DTTOPTS));
dttOpts.dwFlags = DWMAPI.DTT_COMPOSITED | rflags | DWMAPI.DTT_TEXTCOLOR;
dttOpts.crText = ColorTranslator.ToWin32(color);
dttOpts.iGlowSize = 10;
NativeMethods.RECT textBounds = new NativeMethods.RECT(0, 0, bounds.Right - bounds.Left, bounds.Bottom - bounds.Top);
UXTheme.DrawThemeTextEx(renderer.Handle, memoryHdc, 0, 0, text, -1, (int)flags, ref textBounds, ref dttOpts);
const int SRCCOPY = 0x00CC0020;
NativeMethods.BitBlt(primaryHdc, bounds.Left, bounds.Top, bounds.Width, bounds.Height, memoryHdc, 0, 0, SRCCOPY);
NativeMethods.DeleteObject(new HandleRef(null, fontHandle));
NativeMethods.DeleteObject(new HandleRef(null, dib));
NativeMethods.DeleteDC(new HandleRef(null, memoryHdc));
graphics.ReleaseHdc(primaryHdc);
}
public void PaintCurrentElement(Graphics g, Rectangle bounds)
{
if (this.currentHTheme == IntPtr.Zero)
{
return;
}
RadHdcWrapper radHdcWrapper = new RadHdcWrapper(g, true);
IntPtr hdc = radHdcWrapper.GetHdc();
NativeMethods.RECT rect = new NativeMethods.RECT()
{
left = bounds.Left,
top = bounds.Top
};
rect.bottom = rect.top + bounds.Height;
rect.right = rect.left + bounds.Width;
UXTheme.DrawThemeBackground(this.currentHTheme, hdc, this.currentElement.Part, this.currentElement.State, ref rect, IntPtr.Zero);
radHdcWrapper.Dispose();
}
private void CloseAllHandles()
{
try
{
foreach (KeyValuePair <string, IntPtr> themeHandle in this.themeHandles)
{
UXTheme.CloseThemeData(themeHandle.Value);
}
this.themeHandles.Clear();
if (this.vistaExplorerThemeOwner == null)
{
return;
}
this.vistaExplorerThemeOwner.Dispose();
this.vistaExplorerThemeOwner = (Control)null;
}
catch
{
}
}
public static void DrawTextOnGlass(
Graphics graphics,
string text,
Font font,
Rectangle bounds,
Color color,
TextFormatFlags flags,
int rflags)
{
IntPtr hdc = graphics.GetHdc();
IntPtr compatibleDc = NativeMethods.CreateCompatibleDC(new HandleRef((object)null, hdc));
NativeMethods.BITMAPINFO pbmi = new NativeMethods.BITMAPINFO();
pbmi.bmiHeader_biSize = Marshal.SizeOf((object)pbmi);
pbmi.bmiHeader_biWidth = bounds.Width;
pbmi.bmiHeader_biHeight = -bounds.Height;
pbmi.bmiHeader_biPlanes = (short)1;
pbmi.bmiHeader_biBitCount = (short)32;
pbmi.bmiHeader_biCompression = 0;
IntPtr ppvBits = IntPtr.Zero;
IntPtr dibSection = NativeMethods.CreateDIBSection(hdc, pbmi, 0U, out ppvBits, IntPtr.Zero, 0U);
NativeMethods.SelectObject(new HandleRef((object)null, compatibleDc), new HandleRef((object)null, dibSection));
IntPtr hfont = font.ToHfont();
NativeMethods.SelectObject(new HandleRef((object)null, compatibleDc), new HandleRef((object)null, hfont));
VisualStyleRenderer visualStyleRenderer = new VisualStyleRenderer(VisualStyleElement.Window.Caption.Active);
DWMAPI.DTTOPTS pOptions = new DWMAPI.DTTOPTS();
pOptions.dwSize = Marshal.SizeOf(typeof(DWMAPI.DTTOPTS));
pOptions.dwFlags = 8192 | rflags | 1;
pOptions.crText = ColorTranslator.ToWin32(color);
pOptions.iGlowSize = 10;
NativeMethods.RECT pRect = new NativeMethods.RECT(0, 0, bounds.Right - bounds.Left, bounds.Bottom - bounds.Top);
UXTheme.DrawThemeTextEx(visualStyleRenderer.Handle, compatibleDc, 0, 0, text, -1, (int)flags, ref pRect, ref pOptions);
NativeMethods.BitBlt(hdc, bounds.Left, bounds.Top, bounds.Width, bounds.Height, compatibleDc, 0, 0, 13369376);
NativeMethods.DeleteObject(new HandleRef((object)null, hfont));
NativeMethods.DeleteObject(new HandleRef((object)null, dibSection));
NativeMethods.DeleteDC(new HandleRef((object)null, compatibleDc));
graphics.ReleaseHdc(hdc);
}
/// <summary>
/// closes all currently opened HTheme handles
/// </summary>
private void CloseAllHandles()
{
try
{
//release all htheme handles
foreach (KeyValuePair <string, IntPtr> pair in this.themeHandles)
{
UXTheme.CloseThemeData(pair.Value);
}
this.themeHandles.Clear();
if (this.vistaExplorerThemeOwner != null)
{
this.vistaExplorerThemeOwner.Dispose();
this.vistaExplorerThemeOwner = null;
}
}
catch
{
}
}
private IntPtr GetHTheme(string windowClass)
{
IntPtr num;
if (!this.themeHandles.TryGetValue(windowClass, out num))
{
if (this.vistaExplorerThemeOwner == null)
{
this.vistaExplorerThemeOwner = new Control();
this.vistaExplorerThemeOwner.CreateControl();
UXTheme.SetWindowTheme(this.vistaExplorerThemeOwner.Handle, "explorer", (string)null);
}
IntPtr hwnd = IntPtr.Zero;
string lower = windowClass.ToLower();
if (lower == VisualStyleElement.TreeView.Item.Normal.ClassName.ToLower() || lower == VisualStyleElement.ListView.Item.Normal.ClassName.ToLower())
{
hwnd = this.vistaExplorerThemeOwner.Handle;
}
num = UXTheme.OpenThemeData(hwnd, windowClass);
this.themeHandles.Add(windowClass, num);
}
return(num);
}
