Windows 主题视觉样式函数

Bool  IsAppThemed() 　检测视觉样式是否可用。

HTHEME　OpenThemeData(HWND hwnd，LPCWSTR pszClassList)　

Opens the theme data for a window and its associated class.OpenThemeData tries to match each class,

one at a time, to a class data section in the active theme.

　　hwnd:　Handle of the window for which theme data is required.

　　pszClassList:　Pointer to a string that contains a semicolon-separated list of classes.

Theme 主题函数都依据 OpenThemeData() 返回的 HTHEME 句柄作为参数。

hwnd：　窗口或控件句柄

pszClassList：Standard Controls and Windows

标准控件或窗口的class名，可以参考msdn：Parts and States of Standard Controls and Windows

OpenThemeData(hwnd, L"Button");

 也可参考：codeproject上的讨论

HRESULT   DrawThemeText()　使用由视觉样式定义的颜色和字体绘制文本。

csdn博客中的一段使用

https://msdn.microsoft.com/en-us/library/windows/desktop/aa383751(v=vs.85).aspx#LPCWSTR