How to make D3D crosshair

void FillRGB( int x, int y, int w, int h, D3DCOLOR color, IDirect3DDevice9* pDevice )
{
D3DRECT rec = { x, y, x + w, y + h };
pDevice->Clear( 1, &rec, D3DCLEAR_TARGET, color, 0, 0 );
}

D3DVIEWPORT9 view;
pDevice->GetViewport(&view);
int CenterX = (view.Width/2);//Gets screen X resolution then cutting it in half to get the center.
int CenterY = (view.Height/2);//Gets screen Y resolution then cutting it in half to get the center.
FillRGB(CenterX-15, CenterY, 30, 1,D3DCOLOR_XRGB(255,0,0),pDevice);//Diagonal line
FillRGB(CenterX, CenterY-15, 1, 30,D3DCOLOR_XRGB(255,0,0),pDevice);//Vertical line