/// <summary>
/// This function creates OpenGL from a handle to a device context.
/// </summary>
/// <param name="hDC">The handle to the device context.</param>
/// <returns>True if creation was successful.</returns>
protected virtual unsafe bool Create(IntPtr hDC)
{
// Create the big lame pixel format majoo.
PIXELFORMATDESC pixelFormat = new PIXELFORMATDESC();
// Set the values for the pixel format.
pixelFormat.nSize = 40;
pixelFormat.nVersion = 1;
pixelFormat.dwFlags = (PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER);
pixelFormat.iPixelType = PFD_TYPE_RGBA;
pixelFormat.cColorBits = 24;
pixelFormat.cRedBits = 0;
pixelFormat.cRedShift = 0;
pixelFormat.cGreenBits = 0;
pixelFormat.cGreenShift = 0;
pixelFormat.cBlueBits = 0;
pixelFormat.cBlueShift = 0;
pixelFormat.cAlphaBits = 0;
pixelFormat.cAlphaShift = 0;
pixelFormat.cAccumBits = 0;
pixelFormat.cAccumRedBits = 0;
pixelFormat.cAccumGreenBits = 0;
pixelFormat.cAccumBlueBits = 0;
pixelFormat.cAccumAlphaBits = 0;
pixelFormat.cDepthBits = 16;
pixelFormat.cStencilBits = 0;
pixelFormat.cAuxBuffers = 0;
pixelFormat.iLayerType = PFD_MAIN_PLANE;
pixelFormat.bReserved = 0;
pixelFormat.dwLayerMask = 0;
pixelFormat.dwVisibleMask = 0;
pixelFormat.dwDamageMask = 0;
// Match an appropriate pixel format
int iPixelformat = ChoosePixelFormat(hDC, pixelFormat);
if (iPixelformat == 0)
{
return(false);
}
// Sets the pixel format
if (SetPixelFormat(hDC, iPixelformat, pixelFormat) == 0)
{
return(false);
}
// Create a new OpenSharpGL rendering contex
handleRenderContext = wglCreateContext(hDC);
// Make the OpenSharpGL rendering context the current rendering context
wglMakeCurrent(hDC, handleRenderContext);
return(true);
}
/// <summary>
/// This function creates OpenGL from a handle to a device context.
/// </summary>
/// <param name="hDC">The handle to the device context.</param>
/// <returns>True if creation was successful.</returns>
protected unsafe virtual bool Create(IntPtr hDC)
{
// Create the big lame pixel format majoo.
PIXELFORMATDESC pixelFormat = new PIXELFORMATDESC();
// Set the values for the pixel format.
pixelFormat.nSize = 40;
pixelFormat.nVersion = 1;
pixelFormat.dwFlags = (PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER);
pixelFormat.iPixelType = PFD_TYPE_RGBA;
pixelFormat.cColorBits = 24;
pixelFormat.cRedBits = 0;
pixelFormat.cRedShift = 0;
pixelFormat.cGreenBits = 0;
pixelFormat.cGreenShift = 0;
pixelFormat.cBlueBits = 0;
pixelFormat.cBlueShift = 0;
pixelFormat.cAlphaBits = 0;
pixelFormat.cAlphaShift = 0;
pixelFormat.cAccumBits = 0;
pixelFormat.cAccumRedBits = 0;
pixelFormat.cAccumGreenBits = 0;
pixelFormat.cAccumBlueBits = 0;
pixelFormat.cAccumAlphaBits = 0;
pixelFormat.cDepthBits = 16;
pixelFormat.cStencilBits = 0;
pixelFormat.cAuxBuffers = 0;
pixelFormat.iLayerType = PFD_MAIN_PLANE;
pixelFormat.bReserved = 0;
pixelFormat.dwLayerMask = 0;
pixelFormat.dwVisibleMask = 0;
pixelFormat.dwDamageMask = 0;
// Match an appropriate pixel format
int iPixelformat = ChoosePixelFormat(hDC, pixelFormat);
if(iPixelformat == 0 )
return false;
// Sets the pixel format
if(SetPixelFormat(hDC, iPixelformat, pixelFormat) == 0)
return false;
// Create a new OpenSharpGL rendering contex
handleRenderContext = wglCreateContext(hDC);
// Make the OpenSharpGL rendering context the current rendering context
wglMakeCurrent(hDC, handleRenderContext);
return true;
}
public unsafe static extern int SetPixelFormat(IntPtr hDC, int iPixelFormat,
[In, MarshalAs(UnmanagedType.LPStruct)] PIXELFORMATDESC ppfd);
