自定义窗口 mfc

typedef struct _WNDCLASS {
    UINT    style; //制定窗口的类型　　　　
    WNDPROC lpfnWndProc;
    int     cbClsExtra; //额外的数值　　
    int     cbWndExtra; //额外的内存空间　　
    HANDLE  hInstance; //
    HICON   hIcon; //图标的句柄利用loadicon进行赋值
    HCURSOR hCursor; //光标
    HBRUSH  hbrBackground; //画刷
    LPCTSTR lpszMenuName;
    LPCTSTR lpszClassName;
} WNDCLASS; destroyWindow  :销毁窗口 

HICON LoadIcon(
  HINSTANCE hInstance, // handle to application instance
  LPCTSTR lpIconName   // icon-name string or icon resource
                       // identifier
);
 

Parameters

hInstance

Handle to an instance of the module whose executable file contains the icon to be loaded. This parameter must be NULL when a standard icon is being loaded.

lpIconName

Pointer to a null-terminated string that contains the name of the icon resource to be loaded. Alternatively, this parameter can contain the resource identifier in the low-order word and zero in the high-order word. Use the MAKEINTRESOURCE macro to create this value.

To use one of the predefined icons, set the hInstance parameter to NULL and the lpIconName parameter to one of the following values:

Value	Description
IDI_APPLICATION	Default application icon.
IDI_ASTERISK	Same as IDI_INFORMATION.
IDI_ERROR	Hand-shaped icon.
IDI_EXCLAMATION	Same as IDI_WARNING.
IDI_HAND	Same as IDI_ERROR.
IDI_INFORMATION	Asterisk icon.
IDI_QUESTION	Question mark icon.
IDI_WARNING	Exclamation point icon.
IDI_WINLOGO