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using System;
using System.Runtime.InteropServices;
namespace GdiTest
{
public class FreeRDPGDI : GDI
{
static bool available = false;
static bool initialized = false;
static FreeRDPGDI instance = null;
public struct Callbacks
{
[DllImport("libfreerdpgdi")]
public static extern IntPtr GetDC();
[DllImport("libfreerdpgdi")]
public static extern int BitBlt(
IntPtr hdcDest,
int nXDest,
int nYDest,
int nWidth,
int nHeight,
IntPtr hdcSrc,
int nXSrc,
int nYSrc,
System.Int32 dwRop
);
}
public FreeRDPGDI ()
{
this.init();
}
public static FreeRDPGDI getInstance()
{
if (!initialized)
{
instance = new FreeRDPGDI();
initialized = true;
}
return instance;
}
public override void init()
{
available = false;
}
public override bool isAvailable()
{
return available;
}
public override IntPtr GetDC(IntPtr hWnd)
{
if (available)
return Callbacks.GetDC();
else
return (IntPtr) null;
}
public override int ReleaseDC(IntPtr hWnd, IntPtr hDC)
{
return 0;
}
public override IntPtr SelectObject(IntPtr hdc, IntPtr hgdiobj)
{
return (IntPtr) null;
}
public override bool DeleteObject(IntPtr hObject)
{
return false;
}
public override int GetPixel(IntPtr hdc, int X, int Y)
{
return 0;
}
public override int SetPixel(IntPtr hdc, int X, int Y, int crColor)
{
return 0;
}
public override bool MoveToEx(IntPtr hdc, int X, int Y, IntPtr lpPoint)
{
return false;
}
public override bool LineTo(IntPtr hdc, int nXEnd, int nYEnd)
{
return false;
}
public override bool PolylineTo(IntPtr hdc, POINT [] lppt, uint cCount)
{
return false;
}
public override IntPtr CreatePen(int fnPenStyle, int nWidth, int crColor)
{
return (IntPtr) null;
}
public override IntPtr CreateSolidBrush(int crColor)
{
return (IntPtr) null;
}
public override IntPtr CreatePatternBrush(IntPtr hbmp)
{
return (IntPtr) null;
}
public override IntPtr CreateBitmap(int nWidth, int nHeight, uint cPlanes, uint cBitsPerPel, IntPtr lpvBits)
{
return (IntPtr) null;
}
public override bool Ellipse(IntPtr hdc, int nLeftRect, int nTopRect, int nRightRect, int nBottomRect)
{
return false;
}
public override bool Polygon(IntPtr hdc, POINT [] lpPoints, int nCount)
{
return false;
}
public override int BitBlt(IntPtr hdcDest, int nXDest, int nYDest, int nWidth, int nHeight,
IntPtr hdcSrc, int nXSrc, int nYSrc, System.Int32 dwRop)
{
if (available)
return Callbacks.BitBlt(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc, dwRop);
else
return 0;
}
}
}
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