C / C++ / MFC

#include <windows.h>
int main()
{	
	HDC	hDC	= NULL;
	HWND	hWnd	= GetDesktopWindow();
	RECT	rect;

	if (hWnd)
	{
		hDC = GetWindowDC(hWnd);

		if (hDC)
		{
			rect.top	= 100;
			rect.left	= 100;
			rect.right	= 300;
			rect.bottom	= 300;


			DrawText(hDC, TEXT("Hello World!"), 12, &rect, DT_LEFT);

			ReleaseDC(hWnd, hDC);
		}
	}

	return 0;
}

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

<br />
void CChildView::OnDebug() <br />
{<br />
        //error checking for next 2 functions not shown<br />
	CoInitialize(NULL);<br />
        CoCreateInstance(CLSID_MotionTracker, NULL, CLSCTX_SERVER, IID_IMotionTracker, (void**) &pMT);<br />
<br />
        //the following all works<br />
	pMT->MT_SetCalibratedOutput(m_bLogCalibratedData);<br />
        pMT->MT_SetFilterSettings(1,1,1);<br />
        pMT->MT_SetOutputMode(1);<br />
        pMT->MT_SetCOMPort(nPortNumber);<br />
<br />
	try<br />
	{<br />
		pMT->MT_StartProcess();  //error thrown here<br />
	}<br />
	catch(...)  //the program never catches anything in any mode<br />
	{<br />
		AfxMessageBox("error!?!?!");<br />
	}<br />
	GetData();  //never gets to here in debug mode for me to debug this func.<br />
	CoUninitialize();<br />
	pMT->Release();<br />
}<br />

//function, creating Edit Boxes
void CInput::AddEditBox()
{
   ASSERT(IsWindow(m_hWnd));  // Add this line
...