Code showing How to rotate a dc 90 degrees...

Code:

XFORM x1form;
XFORM xfform;
XFORM x3form;

//rotate the DC
nGraphicsMode = SetGraphicsMode(dcDMJ.m_hDC, GM_ADVANCED);
iAngle =1;



double fangle = (double)90 / 180. * 3.1415926;
x1form.eM11 = (float)cos(fangle);
x1form.eM12 = (float)sin(fangle);
x1form.eM21 = (float)-sin(fangle);
x1form.eM22 = (float)cos(fangle);
x1form.eDx = 0;
x1form.eDy = 0;

xfform.eM11 = 1;
xfform.eM12 = 0;
xfform.eM21 = 0;
xfform.eM22 = 1;
xfform.eDx = iepDlg->formExtproperties->m_nPageHeight;
xfform.eDy = 0;

CombineTransform(&x3form,&x1form,&xfform);
...

if ( iAngle != 0 )
{
    SetWorldTransform( dcDMJ.m_hDC,&x3form);
}

// restore the DC
if ( iAngle != 0 )
{
    x1form.eM11 = (float)1.0; 
    x1form.eM12 = (float)0;
    x1form.eM21 = (float)0;
    x1form.eM22 = (float)1.0;
    x1form.eDx = (float)0;
    x1form.eDy = (float)0;

    SetWorldTransform(dcDMJ.m_hDC, &x1form);
    SetGraphicsMode(dcDMJ.m_hDC, nGraphicsMode);
}

 

I dont get what you are trying to say.