HTHEME hthemeWindow;
HTHEME hthemeScrollbar;
+ RECT rcCaptionButtons[4];
UINT lastHitTest;
BOOL HasAppDefinedRgn;
BOOL HasThemeRgn;
#define SCROLL_MIN_RECT 4
LRESULT CALLBACK ThemeWndProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam, WNDPROC DefWndProc);
+void ThemeCalculateCaptionButtonsPos(HWND hWnd, HTHEME htheme);
void ThemeDrawScrollBar(PDRAW_CONTEXT pcontext, INT Bar, POINT* pt);
VOID NC_TrackScrollBar(HWND Wnd, WPARAM wParam, POINT Pt);
void ThemeInitDrawContext(PDRAW_CONTEXT pcontext, HWND hWnd, HRGN hRgn);