获取SDL 2应用程序的窗口句柄

时间:2014-06-09 10:08:51

标签: c winapi sdl sdl-2

我想获得SDL2窗口的句柄,以便与WinApi一起使用。

我使用以下代码检索该句柄:

/* All the SDL initalisation... */
SDL_Window* window = SDL_CreateWindow("My Window", SDL_WINDOWPOS_UNDEFINED,
                        SDL_WINDOWPOS_UNDEFINED, RESX, RESY, SDL_WINDOW_SHOWN);
SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
if (window == NULL || renderer == NULL) {
    MessageBox(NULL, L"SDL initialisation error", NULL, MB_OK);
    exit(-1);
}

SDL_SysWMinfo wmInfo;
SDL_GetWindowWMInfo(window, &wmInfo);
HWND hwnd = wmInfo.info.win.window;

但此时,hwnd地址为0xcccccccc(未使用)。

我做错了吗?

1 个答案:

答案 0 :(得分:4)

备注部分中的

SDL Wiki page表示info.version必须在使用前初始化。代码示例建议在查询WM信息之前使用SDL_VERSION(&info.version);

SDL_SysWMinfo wmInfo;
SDL_VERSION(&wmInfo.version);
SDL_GetWindowWMInfo(window, &wmInfo);
HWND hwnd = wmInfo.info.win.window;