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/* Copyright 1996 - 2000 Adobe Systems Incorporated                */

/* All Rights Reserved.                                            */

#include <windows.h>

// from PS 6 SDK - WinUtilities.cpp

/* Centers a dialog template 1/3 of the way down on the main screen */

void CenterDialog(HWND hDlg)

{

        int  nHeight;

        int  nWidth;

        int  nTitleBits;

        RECT rcDialog;

        RECT rcParent;

        int  xOrigin;

        int  yOrigin;

        int  xScreen;

        int  yScreen;

        HWND hParent = GetParent(hDlg);

        if  (hParent == NULL)

                hParent = GetDesktopWindow();

        GetClientRect(hParent, &rcParent);

        ClientToScreen(hParent, (LPPOINT)&rcParent.left);  // point(left,  top)

        ClientToScreen(hParent, (LPPOINT)&rcParent.right); // point(right, bottom)

        // Center on Title: title bar has system menu, minimize,  maximize bitmaps

        // Width of title bar bitmaps - assumes 3 of them and dialog has a sysmenu

        nTitleBits = GetSystemMetrics(SM_CXSIZE);

        // If dialog has no sys menu compensate for odd# bitmaps by sub 1 bitwidth

        if  ( ! (GetWindowLong(hDlg, GWL_STYLE) & WS_SYSMENU))

                nTitleBits -= nTitleBits / 3;

        GetWindowRect(hDlg, &rcDialog);

        nWidth  = rcDialog.right  - rcDialog.left;

        nHeight = rcDialog.bottom - rcDialog.top;

        xOrigin = max(rcParent.right - rcParent.left - nWidth, 0) / 2

                  + rcParent.left - nTitleBits;

        xScreen = GetSystemMetrics(SM_CXSCREEN);

        if  (xOrigin + nWidth > xScreen)

                xOrigin = max (0, xScreen - nWidth);

        yOrigin = max(rcParent.bottom - rcParent.top - nHeight, 0) / 3

                  + rcParent.top;

        yScreen = GetSystemMetrics(SM_CYSCREEN);

        if  (yOrigin + nHeight > yScreen)

                yOrigin = max(0 , yScreen - nHeight);

        SetWindowPos(hDlg, NULL, xOrigin, yOrigin, nWidth, nHeight, SWP_NOZORDER);

}