event.type:770 匹配的是SDL_TEXTEDITING，也就是在窗口中开了输入法导致如wasd这样的键按下时无法被i...
SDL_CreateThread最后一个参数传递的参数SDL_Thread* thread =SDL_CreateThread(refresh_video,NULL,NULL);while(true) {//等待SDL事件进入SDL_WaitEvent(&event);//收到刷新事件对页面进行刷新if(event.type ==REFRESH_EVENT) {//这里是读取一帧视频真,数据格式是YUV420P,像素排列是4:2:0,一行像素...
解析键盘事件的代码示例如下 :调用 SDL_WaitEvent 函数 , 阻塞等待事件到来 , 事件到来后 , 首先, 获取事件的类型 ,event.type, 先看是哪种类型的事件 , 选择使用哪种结构体数据格式访问改事件数据 ; 然后, 如果获取的事件是 SDL_KEYDOWN 键盘事件 , 则使用 SDL_KeyboardEvent 结构体的数据格式访问 SDL_Eve...
typedef union SDL_Event { Uint32 type; /**< 事件类型,与所有事件共享 */ SDL_CommonEvent common; /**< 通用事件数据 */ SDL_DisplayEvent display; /**< 显示事件数据 */ SDL_WindowEvent window; /**< 窗口事件数据 */ SDL_KeyboardEvent key; /**< 键盘事件数据 */ SDL_TextEditingEvent edit...
if ( gameEvent.type == SDL_KEYUP ){/* if ( gameEvent.type == SDL_KEYDOWN ) */ if ( gameEvent.key.keysym.sym == SDLK_ESCAPE ){ gameOver = true; } } } doSomeLoopThings(); } return; } void doSomeLoopThings() {
switch(event.type) { case SDL_QUIT: i = 1000; break; } } SDL_RenderPresent(pRenderer); SDL_Delay(100); } SDL_DestroyWindow(pWindow); } else { fprintf(stderr,"Error creating the window: %s\n",SDL_GetError()); } } SDL_Quit(); ...
SDL_Event sdl_event; while (SDL_PollEvent(&sdl_event)) { if(sdl_event.type == SDL_EVENT_POLL_SENTINEL) { // I stepped through with a debugger to make sure that this was the reason break; } switch(sdl_event.type) { // handle other events } } I haven't needed to break out ...
}if(e.type == SDL_MOUSEBUTTONDOWN)// 用户点击鼠标quit =true;// 清空渲染器SDL_RenderClear(renderer);// 在渲染器内平铺背景intbW, bH;SDL_QueryTexture(background,NULL,NULL, &bW, &bH);// 查询背景纹理宽高for(inty =0; y <= SCREEN_HEIGHT; y += bH)// (0, 0) (bW, bH) 防止背景...
SDL_Event是一个联合体,其中type字段决定了是那种事件,是一个枚举类型,其定义为: typedefenum{ SDL_NOEVENT=0,/*未使用*/SDL_ACTIVEEVENT,/*应用程序失去焦点或得到焦点*/SDL_KEYDOWN,/*按下某键*/SDL_KEYUP,/*松开某键*/SDL_MOUSEMOTION,/*鼠标移动*/SDL_MOUSEBUTTONDOWN,/*鼠标键按下*/SDL_MOUSEBUTT...
C.SDL_WaitEvent(&e)switchC.eventType(&e) {caseC.SDL_QUIT: inputChan <- e running =falsecaseC.SDL_KEYDOWN, C.SDL_KEYUP, C.SDL_MOUSEBUTTONDOWN, C.SDL_MOUSEBUTTONUP, C.SDL_MOUSEWHEEL: inputChan <- ecaseEvent_MainOpEvent: (<-mainOpChan)()caseEvent_DrawEvent: ...