窗口事件枚舉值
可能值
|
SDL_WINDOWEVENT_NONE |
never used |
|
SDL_WINDOWEVENT_SHOWN |
窗口被顯示 |
|
SDL_WINDOWEVENT_HIDDEN |
窗口被隱藏 |
|
SDL_WINDOWEVENT_EXPOSED |
窗口被顯露出來且必須被重畫（夢維：這種情況一般是窗口被其他窗口擋住，然後被遮擋部分又顯示出來時） |
|
SDL_WINDOWEVENT_MOVED |
window has been moved to data1, data2 |
|
SDL_WINDOWEVENT_RESIZED |
window has been resized to data1xdata2 |
|
SDL_WINDOWEVENT_SIZE_CHANGED |
窗口大小改變, 不論是用戶拖動改變大小還是調用了改變窗口大小的API |
|
SDL_WINDOWEVENT_MINIMIZED |
窗口被最小化 |
|
SDL_WINDOWEVENT_MAXIMIZED |
窗口被最大化 |
|
SDL_WINDOWEVENT_RESTORED |
窗口返回普通大小並返回原來位置 |
|
SDL_WINDOWEVENT_ENTER |
窗口得到鼠標焦點 |
|
SDL_WINDOWEVENT_LEAVE |
窗口失去鼠標焦點 |
|
SDL_WINDOWEVENT_FOCUS_GAINED |
窗口得到鍵盤焦點 |
|
SDL_WINDOWEVENT_FOCUS_LOST |
窗口失去鍵盤焦點 |
|
SDL_WINDOWEVENT_CLOSE |
窗口管理器請求窗口關閉 |
代碼示例
|
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#include "SDL.h"int
main(int,
char**) { int
width = 640; int
height = 480; if
(SDL_Init(SDL_INIT_VIDEO) != 0) { return
1; } atexit(SDL_Quit); SDL_Window* window = SDL_CreateWindow( "Example", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
width, height, SDL_WINDOW_SHOWN | SDL_WINDOW_RESIZABLE ); Uint32 windowID = SDL_GetWindowFromID(window); while
(true) { SDL_Event event; while
(SDL_PollEvent(&event)) { switch
(event.type) { case
SDL_WINDOWEVENT: { if
(event.window.windowID == windowID) { switch
(event.window.event) { case
SDL_WINDOWEVENT_SIZE_CHANGED: { width = event.window.data1; height = event.window.data2; break; } case
SDL_WINDOWEVENT_CLOSE: { event.type = SDL_QUIT; SDL_PushEvent(&event); break; } } } break; } case
SDL_QUIT: { return
0; } /* ... */ } } /* ... */ SDL_Sleep(1); }} |