C / C++ / MFC

void YourClass::OnPaint()
{
	CPaintDC dc(this);
	Graphics g(dc.m_hDC);

	if(NULL != pCB)//If cached bitmap exists draw it.
	{
		g.DrawCachedBitmap(pCB,0,0); 
	}
	else
	{
		CRect rect;
		GetClientRect(&rect);
		Bitmap buf(rect.Width(), rect.Height());
		/*
		Draw something here in buf
		*/
		g.DrawImage(&buf, 0, 0);
		if(NULL == pCB)
		{
			pCB =  new CachedBitmap(&buf,&g); //Cache it
		}
	}
}

dehseth wrote:

You need to get the filename from args, open the file, read the file and set text of your textbox control.

Nitheesh George wrote:

I think you need to set your application as default for the file type using shell extension

Greetings.
--------
M.D.V.

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
“The First Rule of Program Optimization: Don't do it. The Second Rule of Program Optimization (for experts only!): Don't do it yet.” - Michael A. Jackson