public unsafe Graphics(DeviceContext deviceContext)
{
GdiPlus.Init();
Unsafe.SkipInit(out GpGraphics gpGraphics);
Imports.GdipCreateFromHDC(deviceContext, &gpGraphics).ThrowIfFailed();
_gpGraphics = gpGraphics;
}
public unsafe static extern GpStatus GdipFillEllipseI(
GpGraphics graphics,
GpBrush brush,
int x,
int y,
int width,
int height);
public static void SetSmoothingMode(GpGraphics graphics, SmoothingMode smoothingMode)
{
GpStatus status = Imports.GdipSetSmoothingMode(graphics, smoothingMode);
if (status != GpStatus.Ok)
{
throw GetExceptionForStatus(status);
}
}
public static void FillEllipse(GpGraphics graphics, GpBrush brush, int x, int y, int width, int height)
{
GpStatus status = Imports.GdipFillEllipseI(graphics, brush, x, y, width, height);
if (status != GpStatus.Ok)
{
throw GetExceptionForStatus(status);
}
}
private unsafe static void DrawLines(GpGraphics graphics, GpPen pen, GpPoint *points, int count)
{
GpStatus status = Imports.GdipDrawLinesI(graphics, pen, points, count);
if (status != GpStatus.Ok)
{
throw GetExceptionForStatus(status);
}
}
public unsafe static extern GpStatus GdipDrawLinesI(
GpGraphics graphics,
GpPen pen,
GpPoint *points,
int count);
public static extern GpStatus GdipSetSmoothingMode(
GpGraphics graphics,
SmoothingMode smoothingMode);
public static extern GpStatus GdipCreateFromHDC(
DeviceContext hdc,
out GpGraphics graphics);
ThrowIfFailed(Imports.GdipCreateFromHDC(deviceContext, out GpGraphics graphics));
public unsafe static void DrawLines(GpGraphics graphics, GpPen pen, GpPoint[] points)
{
fixed(GpPoint *p = points)
DrawLines(graphics, pen, p, points.Length);
}
public unsafe static void DrawLines(GpGraphics graphics, GpPen pen, POINT[] points)
{
fixed(POINT *p = points)
DrawLines(graphics, pen, (GpPoint *)p, points.Length);
}