DrawText wont work in winxp where as it does in win7

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ActiveX

Hi,

I am working on a code in which I am creating a region using CRgn Class,the following is the snippet to create black region on dc:

CRect fpsoverlay;
	GetClientRect(&fpsoverlay);
        fpsOverlay.right = fpsOverlay.right - 30;
	CRgn rgn2;
	CBrush bBr2(RGB(0,0,0));
	dc.SelectObject(bBr2);
	int nOldROP2 = dc.GetROP2();
	dc.SetROP2(R2_COPYPEN);
	rgn2.CreateRectRgn(fpsoverlay.left,fpsoverlay.bottom-15,fpsoverlay.right,fpsoverlay.bottom);
	dc.FillRgn(&rgn2,&bBr2);
        SetBkMode(dc,TRANSPARENT);
	SetTextColor(dc,RGB(0,255,0));
        DrawText(dc,"Caption1",-1,fpsoverlay,DT_CENTER);

I am creating another region next to the first region with different text like the following:

    CRect fpsoverlay1;
GetClientRect(&fpsoverlay1);
    fpsOverlay1.left =  fpsOverlay1.right - 30;
    fpsoverlay1.top = fpsoverlay1.bottom-15;
CRgn rgn1;
CBrush bBr3(RGB(0,0,0));
dc.SelectObject(bBr3);
int nOldROP3 = dc.GetROP2();
dc.SetROP2(R2_COPYPEN);
rgn1.CreateRectRgn(fpsoverlay1.left,fpsoverlay1.top,fpsoverlay1.right,fpsoverlay1.bottom);
dc.FillRgn(&rgn1,&bBr3);
    SetBkMode(dc,TRANSPARENT);
SetTextColor(dc,RGB(0,255,0));
    DrawText(dc,"Caption2",-1,fpsoverlay1,DT_RIGHT);

This code works well in Windows7(it is developed on this OS),but when I use this ActiveX control on windows XP the caption of the second region i.e "Caption2" is not visible.
Please suggest the solution.
Thanks in advance