function Map_BirdView() 
{
    var ctrlman = m_Map.GetCtrlMan()
    var ctrlstate = ctrlman.GetControlState()
    
    var v = ctrlstate.GetRotate()    
    if (v.GetX() != 0) {
        v.SetX(0);
    } else {
        v.SetX(-60);
    }
    ctrlstate.SetRotate(v);
}

#include "CXControlState.h";
#include "CXVector.h";

void CSampleDlg::OnSmBirdview()
{
	CXControlState ctrlstate = ctrlman.GetControlState();
	CXVector vector = ctrlstate.GetRotate();

	if (vector.GetX() != 0) {
		vector.SetX(0);
	} else {
		vector.SetX(-60);
	}
	ctrlstate.SetRotate(vector);
}