private void PaintCustomBorder(IntPtr hWnd, IntPtr hRgn)
{
Color bColor;
if (!Enabled && !BorderDisabledColor.IsEmpty)
{
bColor = BorderDisabledColor;
}
else if (Focused && !BorderFocusedColor.IsEmpty)
{
bColor = BorderFocusedColor;
}
else if (BorderColor != SystemColors.WindowFrame)
{
bColor = BorderColor;
}
else
{
//Regular border, which has already been drawn by the system at this point
return;
}
using (var ncg = new NonClientGraphics(hWnd, hRgn))
{
if (ncg.Graphics == null)
{
return;
}
ControlPaint.DrawBorder(ncg.Graphics, new Rectangle(new Point(0), Size), bColor, ButtonBorderStyle.Solid);
}
}
private void PaintCustomBorder(IntPtr hWnd, IntPtr hRgn)
{
var bColor = Color.Empty;
//If a state color is empty, it means that the border color does not change with that state.
if (!Enabled && !BorderDisabledColor.IsEmpty)
{
bColor = BorderDisabledColor;
}
else if (Focused && !BorderFocusedColor.IsEmpty)
{
bColor = BorderFocusedColor;
}
//Only draw the regular border if it is not the same color as the one already drawn by the system.
else if (BorderColor != SystemColors.WindowFrame)
{
bColor = BorderColor;
}
if (!bColor.IsEmpty)
{
using (var ncg = new NonClientGraphics(hWnd, hRgn))
{
var g = ncg.Graphics;
if (g == null)
{
return;
}
ControlPaint.DrawBorder(g, NonClientRectangle, bColor, ButtonBorderStyle.Solid);
}
}
}
private void PaintVisuallyStyledBorder(IntPtr hWnd, IntPtr hRgn)
{
var vsElement = VisualStyleElement.CreateElement(VSCLASS_LISTVIEW, 0, 0);
if (VisualStyleRenderer.IsElementDefined(vsElement))
{
using (var ncg = new NonClientGraphics(hWnd, hRgn))
{
var g = ncg.Graphics;
if (g == null)
{
return;
}
var vsRenderer = GetVisualStyleRenderer(vsElement);
using (new GraphicsClippedToBorder(g, this, BorderStyle))
{
vsRenderer.DrawBackground(g, NonClientRectangle);
}
}
}
}
private void PaintVisuallyStyledBorder(IntPtr hWnd, IntPtr hRgn)
{
var state = !Enabled ? 4 : Focused ? 3 : 1;
var vsElement = VisualStyleElement.CreateElement(VSCLASS_EDIT, 6, state);
if (VisualStyleRenderer.IsElementDefined(vsElement))
{
var vsRenderer = GetVisualStyleRenderer(vsElement);
using (var ncg = new NonClientGraphics(hWnd, hRgn))
{
var g = ncg.Graphics;
if (g == null)
{
return;
}
using (new GraphicsClippedToBorder(g, this, BorderStyle))
{
vsRenderer.DrawBackground(g, new Rectangle(new Point(0), Size));
}
}
}
}
private void PaintCustomBorder(IntPtr hWnd, IntPtr hRgn)
{
Color borderColor;
if (!Enabled && !BorderDisabledColor.IsEmpty)
{
borderColor = BorderDisabledColor;
}
else if (Focused && !BorderFocusedColor.IsEmpty)
{
borderColor = BorderFocusedColor;
}
else
{
//Since this control does not support a single border out of the box, we draw the regular border
//even if it's color is not different from the default.
borderColor = BorderColor;
}
using (var ncg = new NonClientGraphics(hWnd, hRgn))
{
var g = ncg.Graphics;
if (g == null)
{
return;
}
var borderBounds = new Rectangle(new Point(0), Size);
ControlPaint.DrawBorder(g, borderBounds, borderColor, ButtonBorderStyle.Solid);
//As per the Microsoft documentation for this control, the Single BorderStyle is not supported
//and the 3D border is always used. As a workaround, we paint the inner border with the same
//color as the back color to simulate a thinner border. I have not tried it, but I believe that
//a better solution would be to handle the WM_NCCALC message, but that would be more complicated...
var borderSize = SystemInformation.BorderSize;
borderBounds.Inflate(-borderSize.Width, -borderSize.Height);
ControlPaint.DrawBorder(g, borderBounds, base.BackColor, ButtonBorderStyle.Solid);
}
}
