/// <summary>
/// Creates a logical cosmetic or geometric pen that has the specified style, width, and brush
/// attributes.
/// </summary>
/// <param name="pen">The <see cref="T:System.Drawing.Pen"/> to convert.</param>
/// <returns>If the function succeeds, the return value is a handle that identifies a logical pen;
/// otherwise, the return value is <c>IntPtr.Zero</c>.</returns>
public static IntPtr ExtCreatePen(Pen pen)
{
/*
* Determine the pen style.
*/
uint penStyle = WinGdi.PS_GEOMETRIC | WinGdi.PS_ENDCAP_SQUARE | WinGdi.PS_JOIN_ROUND;
switch (pen.DashStyle)
{
case DashStyle.Dash:
penStyle |= WinGdi.PS_DASH;
break;
case DashStyle.DashDot:
penStyle |= WinGdi.PS_DASHDOT;
break;
case DashStyle.DashDotDot:
penStyle |= WinGdi.PS_DASHDOTDOT;
break;
case DashStyle.Dot:
penStyle |= WinGdi.PS_DOT;
break;
default:
penStyle |= WinGdi.PS_SOLID;
break;
}
/*
* Determine the pen width.
*/
uint penWidth = (uint)pen.Width;
/*
* Initialize LOGBRUSH.
*/
LOGBRUSH logBrush = new LOGBRUSH();
logBrush.lbStyle = WinGdi.BS_SOLID;
logBrush.lbColor = ColorTranslator.ToWin32(pen.Color);
/*
* Call native method.
*/
return(Gdi32.ExtCreatePen(penStyle, penWidth, ref logBrush, 0, null));
}
/// <summary>
/// Creates a logical pen from the specified <see cref="T:System.Drawing.Pen"/>.
/// </summary>
/// <param name="pen">The <see cref="T:System.Drawing.Pen"/> to convert.</param>
/// <returns>If the function succeeds, the return value is a handle that identifies a logical pen.
/// If the function fails, the return value is <c>IntPtr.Zero</c>.</returns>
/// <exception cref="ArgumentNullException"><para><paramref name="pen"/> is <see langword="null"/>.</para></exception>
public static IntPtr CreatePen(Pen pen)
{
if (pen == null)
{
throw new ArgumentNullException("pen");
}
Int32 penStyle;
switch (pen.DashStyle)
{
case DashStyle.Dash:
penStyle = WinGdi.PS_DASH;
break;
case DashStyle.DashDot:
penStyle = WinGdi.PS_DASHDOT;
break;
case DashStyle.DashDotDot:
penStyle = WinGdi.PS_DASHDOTDOT;
break;
case DashStyle.Dot:
penStyle = WinGdi.PS_DOT;
break;
default:
penStyle = WinGdi.PS_SOLID;
break;
}
Int32 width = (Int32)pen.Width;
Int32 color = ColorTranslator.ToWin32(pen.Color);
return(Gdi32.CreatePen(penStyle, width, color));
}
/// <summary>
/// Sets the pixel at the specified coordinates to the closest approximation of the specified color.
/// The point must be in the clipping region and the visible part of the device surface.
/// </summary>
/// <param name="hdc">Handle to the device context.</param>
/// <param name="x">Specifies the x-coordinate, in logical units, of the point to be set.</param>
/// <param name="y">Specifies the y-coordinate, in logical units, of the point to be set.</param>
/// <param name="color">Specifies the color to be used to paint the point.</param>
/// <returns>If the function succeeds, the return value is <see langword="true"/>; otherwise, <see langword="false"/>.</returns>
public static Boolean SetPixelV(IntPtr hdc, Int32 x, Int32 y, Color color)
{
return(Gdi32.SetPixelV(hdc, x, y, ColorTranslator.ToWin32(color)));
}
/// <summary>
/// Sets the pixel at the specified coordinates to the specified color.
/// </summary>
/// <param name="hdc">Handle to the device context.</param>
/// <param name="x">Specifies the x-coordinate, in logical units, of the point to be set.</param>
/// <param name="y">Specifies the y-coordinate, in logical units, of the point to be set.</param>
/// <param name="color">Specifies the color to be used to paint the point.</param>
/// <returns>If the function succeeds, the return value is the <see cref="T:Color"/> that the function
/// sets the pixel to. This value may differ from the color specified by color; that occurs when an
/// exact match for the specified color cannot be found. If the function fails, the return value is -1.</returns>
public static Color SetPixel(IntPtr hdc, Int32 x, Int32 y, Color color)
{
return(ColorTranslator.FromWin32(Gdi32.SetPixel(hdc, x, y, ColorTranslator.ToWin32(color))));
}
/// <summary>
/// Sets the pixel at the specified coordinates to the closest approximation of the specified color.
/// The point must be in the clipping region and the visible part of the device surface.
/// </summary>
/// <param name="hdc">Handle to the device context.</param>
/// <param name="x">Specifies the x-coordinate, in logical units, of the point to be set.</param>
/// <param name="y">Specifies the y-coordinate, in logical units, of the point to be set.</param>
/// <param name="color">Specifies the color to be used to paint the point.</param>
/// <returns>If the function succeeds, the return value is <see langword="true"/>; otherwise, <see langword="false"/>.</returns>
public static bool SetPixelV(IntPtr hdc, int x, int y, Color color)
{
return(Gdi32.SetPixelV(hdc, x, y, ColorTranslator.ToWin32(color)));
}
/// <summary>
/// Fills a rectangle by using a brush of the specified color. This function includes the left and
/// top borders, but excludes the right and bottom borders of the rectangle.
/// </summary>
/// <param name="hdc">Handle to the device context.</param>
/// <param name="lprc">Pointer to a RECT structure that contains the logical coordinates of the rectangle to be filled.</param>
/// <param name="crColor">Specifies the color to fill the rectangle with.</param>
/// <returns></returns>
public static Int32 FillSolidRect(IntPtr hdc, [In] ref RECT lprc, Color crColor)
{
return(FillRect(hdc, ref lprc, Gdi32.CreateSolidBrush(crColor)));
}
