/// -----------------------------------------------------------------------------------
/// <summary>
/// Uninitialize the graphics object by releasing the DC.
/// </summary>
/// -----------------------------------------------------------------------------------
public void Uninit()
{
CheckDisposed();
if (m_cactInitGraphics > 0)
{
Debug.Assert(m_vwGraphics != null);
Debug.Assert(m_graphics != null);
m_cactInitGraphics--;
// JohnT: Should be redundant to test for m_graphics null, but see comments above
// and LTB-708.
if (m_cactInitGraphics == 0 && m_vwGraphics != null && m_graphics != null)
{
// We have released as often as we init'd. The device context must have been
// made in InitGraphics. Release it.
IntPtr hdc = m_vwGraphics.GetDeviceContext();
m_vwGraphics.ReleaseDC();
if (hdc != IntPtr.Zero)
{
m_graphics.ReleaseHdc(hdc);
}
m_graphics.Dispose();
m_graphics = null;
}
}
}
void Dispose(bool properly)
{
// Can't do anything sensible if called from destructor; nothing to do if somehow called twice.
if (!properly || m_graphics == null)
{
return;
}
IntPtr hdc = m_vwGraphics.GetDeviceContext();
m_vwGraphics.ReleaseDC();
if (hdc != IntPtr.Zero)
{
m_graphics.ReleaseHdc(hdc);
}
m_vwGraphics = null;
if (m_shouldDisposeGraphics)
{
m_graphics.Dispose();
}
m_graphics = null;
}
protected void ProcessGetDeviceContext()
{
m_vwGraphics32.GetDeviceContext();
}
