GetClientRect(hwnd, &rect);
DrawThemeParentBackground(hwnd, hdc, &rect);
DrawThemeBackground(This->TrayTheme, hdc, TNP_BACKGROUND, 0, &rect, 0);
GetClientRect(hwnd, &rect);
DrawThemeParentBackground(hwnd, hdc, &rect);
DrawThemeBackground(This->TrayTheme, hdc, TNP_BACKGROUND, 0, &rect, 0);