#ifndef WINEXT_HPP_
#define WINEXT_HPP_

#ifndef STRICT
#define STRICT
#endif

#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x500
#endif

#include <windows.h>

#ifdef WINVER
#  if WINVER < 0x0400
#    error WINVER too min!
#  endif
#else
#  error where WINVER ?
#endif



///////////////////////////////////////////////////////////////////////////////

inline static
int getWindowLeft( HWND hwnd ) {
  if (!hwnd) return 0;
  RECT rc;
  ::GetWindowRect( hwnd, &rc );
  return rc.left;
}

inline static
int getWindowTop( HWND hwnd ) {
  if (!hwnd) return 0;
  RECT rc;
  ::GetWindowRect( hwnd, &rc );
  return rc.top;
}


//! window width
inline static
int getWindowWidth( HWND hwnd ) {
  if (!hwnd) return 0;
  RECT rc;
  ::GetWindowRect( hwnd, &rc );
  return rc.right - rc.left;
}

//! window width
inline static
int getWindowHeight( HWND hwnd ) {
  if (!hwnd) return 0;
  RECT rc;
  ::GetWindowRect( hwnd, &rc );
  return rc.bottom - rc.top;
}



///////////////////////////////////////////////////////////////////////////////

//! width of client area
inline static
int getClientWidth( HWND hwnd ) {
  RECT rc;
  ::GetClientRect( hwnd, &rc );
  return rc.right - rc.left;
}



//! height of client area
inline static
int getClientHeight( HWND hwnd ) {
  RECT rc;
  ::GetClientRect( hwnd, &rc );
  return rc.bottom - rc.top;
}


//! size of client area
inline static
void getClientSize( HWND hwnd, int *wid, int *hei ) {
  RECT rc;
  ::GetClientRect( hwnd, &rc );
  *wid = rc.right - rc.left;
  *hei = rc.bottom - rc.top;
}


///////////////////////////////////////////////////////////////////////////////

inline static
void setWindowLeftTop( HWND hwnd, int left, int top ) {
  ::SetWindowPos(
        hwnd, NULL,
        left, top,
        0, 0,
        SWP_NOSIZE |
        SWP_NOZORDER | SWP_NOACTIVATE );
}


inline static
void setWindowLeft( HWND hwnd, int left ) {
  int top = getWindowTop( hwnd );
  setWindowLeftTop( hwnd, left, top );
}


inline static
void setWindowTop( HWND hwnd, int top ) {
  int left = getWindowLeft( hwnd );
  setWindowLeftTop( hwnd, left, top );
}


//! set window left, top, width, height
inline static
void setWindowBox( HWND hwnd, int x, int y, int w, int h ) {
  ::SetWindowPos(
        hwnd, NULL,
        x, y,
        w, h,
        SWP_NOZORDER | SWP_NOACTIVATE );
}



///////////////////////////////////////////////////////////////////////////////

//! get vertical position
inline static
int getVScrollPos( HWND hwnd ) {
  SCROLLINFO si;
  si.cbSize = sizeof(SCROLLINFO);
  si.fMask = SIF_POS;
  if (::GetScrollInfo( hwnd, SB_VERT, &si )) {
    return si.nPos;
  }
  return 0;
}


//! set vertical position
inline static
void setVScrollPos( HWND hwnd, int pos) {
  SCROLLINFO si;
  si.cbSize = sizeof(SCROLLINFO);
  si.fMask = SIF_POS;
  si.nPos = pos;
  ::SetScrollInfo( hwnd, SB_VERT, &si, TRUE);
  InvalidateRect( hwnd, 0, TRUE );
}


//! get vertical scroll page size
inline static
int getVScrollPage( HWND hwnd ) {
  SCROLLINFO si;
  si.cbSize = sizeof(SCROLLINFO);
  si.fMask = SIF_PAGE;
  if (::GetScrollInfo( hwnd, SB_VERT, &si)) {
    return si.nPage;
  }
  return 0;
}

//! set vertical scroll page size
inline static
void setVScrollPage( HWND hwnd, int page) {
  SCROLLINFO si;
  si.cbSize = sizeof(SCROLLINFO);
  si.fMask = SIF_PAGE;
  si.nPage = page;
  ::SetScrollInfo( hwnd, SB_VERT, &si, TRUE);
}

//! set vertical scroll range
inline static
void setVScrollRange( HWND hwnd, int min, int max ) {
  SCROLLINFO si;
  si.cbSize = sizeof(SCROLLINFO);
  si.fMask = SIF_RANGE;
  si.nMin = min;
  si.nMax = max;
  ::SetScrollInfo( hwnd, SB_VERT, &si, TRUE );
}


#endif // WINEXT_HPP_