private static bool DrawThemedTextBoxBorderNative(IntPtr hWnd, Graphics g, Rectangle bounds, TextBoxState style)
{
if (!VisualStyleRenderer.IsSupported)
{
return(false);
}
using (var themeData = CreateSafeThemeDataHandle(hWnd, VisualStyle.CLASS.EDIT))
{
if (themeData.IsInvalid)
{
return(false);
}
var part = VisualStyle.EDITPARTS.EP_EDITBORDER_NOSCROLL;
var state = style == TextBoxState.Disabled ? VisualStyle.EDITBORDER_NOSCROLLSTATES.EPSN_DISABLED :
style == TextBoxState.Hot ? VisualStyle.EDITBORDER_NOSCROLLSTATES.EPSN_HOT :
style == TextBoxState.Focused ? VisualStyle.EDITBORDER_NOSCROLLSTATES.EPSN_FOCUSED :
VisualStyle.EDITBORDER_NOSCROLLSTATES.EPSN_NORMAL;
using (var graphicsDeviceContext = new SafeGraphicsDeviceContextHandle(g))
{
DrawThemeBackground(themeData, graphicsDeviceContext, part, state, bounds);
}
}
return(true);
}
private static int DrawThemeBackground(SafeThemeDataHandle themeDataHandle,
SafeGraphicsDeviceContextHandle graphicsDeviceContextHandle,
VisualStyle.EDITPARTS editPart,
VisualStyle.EDITBORDER_NOSCROLLSTATES state,
RECT area)
{
var hTheme = themeDataHandle.DangerousGetHandle();
var hdc = graphicsDeviceContextHandle.DangerousGetHandle();
var iPartId = (int)editPart;
var iStateId = (int)state;
return(NativeMethods.DrawThemeBackground(hTheme, hdc, iPartId, iStateId, ref area, IntPtr.Zero));
}
