public static RenderingContext FromBitmapInfo(
BitmapInfo bitmapInfo,
PixelFormatDescriptor pfd,
out IntPtr bitmapHandle)
{
IntPtr dc = WGL.GetDC(IntPtr.Zero);
IntPtr compatibleDc = WGL.CreateCompatibleDC(dc);
WGL.ReleaseDC(IntPtr.Zero, dc);
IntPtr ppvBits;
bitmapHandle = WGL.CreateDIBSection(compatibleDc, ref bitmapInfo, DIBDataType.RgbColors, out ppvBits, IntPtr.Zero, 0U);
if (bitmapHandle == IntPtr.Zero)
{
throw new InternalException("Error in CreateDIBSection", (Exception) new Win32Exception(Marshal.GetLastWin32Error()));
}
if (WGL.SelectObject(compatibleDc, bitmapHandle) == IntPtr.Zero)
{
throw new InternalException("SelectObject failed");
}
int pixelFormatIndex = RenderingContext.smethod_0(compatibleDc, pfd);
IntPtr context = WGL.wglCreateContext(compatibleDc);
if (context == IntPtr.Zero)
{
throw new InternalException("Error in wglCreateContext", (Exception) new Win32Exception(Marshal.GetLastWin32Error()));
}
return(new RenderingContext(IntPtr.Zero, compatibleDc, true, context, pixelFormatIndex));
}
private void initRenderingContext()
{
m_uint_RC = WGL.wglCreateContext(m_uint_DC);
if (m_uint_RC == 0)
{
MessageBox.Show("Unable to get rendering context");
return;
}
if (WGL.wglMakeCurrent(m_uint_DC, m_uint_RC) == 0)
{
MessageBox.Show("Unable to make rendering context current");
return;
}
}
public static RenderingContext FromWindowHandle(
IntPtr windowHandle,
PixelFormatDescriptor pfd)
{
IntPtr dc = WGL.GetDC(windowHandle);
WGL.wglSwapBuffers(dc);
int pixelFormatIndex = RenderingContext.smethod_0(dc, pfd);
IntPtr context = WGL.wglCreateContext(dc);
if (context == IntPtr.Zero)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
return(new RenderingContext(windowHandle, dc, false, context, pixelFormatIndex));
}
public static RenderingContext FromWindowHandle(
IntPtr windowHandle,
int pixelFormatIndex)
{
IntPtr dc = WGL.GetDC(windowHandle);
WGL.wglSwapBuffers(dc);
PixelFormatDescriptor empty = PixelFormatDescriptor.Empty;
if (WGL.SetPixelFormat(dc, pixelFormatIndex, ref empty) == 0)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
IntPtr context = WGL.wglCreateContext(dc);
if (context == IntPtr.Zero)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
return(new RenderingContext(windowHandle, dc, false, context, pixelFormatIndex));
}
