public abstract void WriteText(
string text,
PKBrush brush,
PKFont font,
PKHAlign align,
int x, int y, int w, int h);
public abstract void FillRectangle(PKBrush brush, int x, int y, int w, int h);
public abstract void FillEllipse(PKBrush brush, int x, int y, int w, int h);
public abstract void FillRectangle(PKBrush brush, int x, int y, int w, int h, PKRectangleCorners corners);