[SDL3] Parent Window Child Window Input Separation 부모 자식 윈도우 입력 구분하기
SDL, raylib 2025. 6. 6. 16:48 |부모 윈도우와 자식 윈도우의 입력을 구분해 처리해 보자.
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#define SDL_MAIN_USE_CALLBACKS 1
#include <SDL3/SDL.h>
#include <SDL3/SDL_main.h>
#include <stdio.h>
#include <Windows.h>
static SDL_Window* window = NULL;
static SDL_Renderer* renderer = NULL;
static SDL_Window* childWindow = NULL;
static SDL_Renderer* childRenderer = NULL;
SDL_AppResult SDL_AppInit(void** appstate, int argc, char* argv[])
{
SDL_SetAppMetadata("Example", "1.0", "Sean");
// Initialize SDL with video subsystem
if (!SDL_Init(SDL_INIT_VIDEO)) {
SDL_Log("Couldn't initialize SDL: %s", SDL_GetError());
return SDL_APP_FAILURE;
}
// 메인 윈도우 및 렌더러 생성
if (!SDL_CreateWindowAndRenderer("Parent Window", 640, 480, 0, &window, &renderer)) {
SDL_Log("Couldn't create window/renderer: %s", SDL_GetError());
return SDL_APP_FAILURE;
}
printf("Main window ID: %d\n", SDL_GetWindowID(window));
// 자식 윈도우 및 렌더러 생성
if (!SDL_CreateWindowAndRenderer("Child Window", 640, 480, 0, &childWindow, &childRenderer)) {
SDL_Log("Couldn't create child window/renderer: %s", SDL_GetError());
return SDL_APP_FAILURE;
}
printf("Child window ID: %d\n", SDL_GetWindowID(childWindow));
// 메인 윈도우를 자식 윈도우의 부모 윈도우로 설정
if (!SDL_SetWindowParent(childWindow, window)) {
SDL_Log("Couldn't set child window parent: %s", SDL_GetError());
return SDL_APP_FAILURE;
}
// 윈도우 핸들 구하기
SDL_PropertiesID prop = SDL_GetWindowProperties(window);
HWND hwnd = (HWND)SDL_GetPointerProperty(prop, SDL_PROP_WINDOW_WIN32_HWND_POINTER, NULL);
if (hwnd)
printf("Main window handle: %p\n", hwnd);
prop = SDL_GetWindowProperties(childWindow);
HWND hpwnd = (HWND)SDL_GetPointerProperty(prop, SDL_PROP_WINDOW_WIN32_HWND_POINTER, NULL);
if (hpwnd)
printf("Popup window handle: %p\n", hpwnd);
return SDL_APP_CONTINUE;
}
SDL_AppResult SDL_AppEvent(void* appstate, SDL_Event* event)
{
switch (event->type) {
case SDL_EVENT_QUIT:
return SDL_APP_SUCCESS;
case SDL_EVENT_KEY_DOWN:
printf("Key pressed window: %d, Key: %s\n", event->key.windowID, SDL_GetKeyName(event->key.key));
if (event->key.key == SDLK_ESCAPE)
if (event->key.windowID == SDL_GetWindowID(window))
return SDL_APP_SUCCESS; // Exit on Escape key in main window
else if (event->key.windowID == SDL_GetWindowID(childWindow)) {
// 자식 윈도우에서 Escape 키를 누르면 자식 윈도우 닫음
SDL_DestroyRenderer(childRenderer);
childRenderer = NULL;
SDL_DestroyWindow(childWindow);
childWindow = NULL;
}
break;
case SDL_EVENT_MOUSE_BUTTON_DOWN:
printf("Mouse button pressed window: %d, Button index: %d\n", event->button.windowID, event->button.button);
printf("Mouse position: (%d, %d)\n", (int)event->button.x, (int)event->button.y);
break;
default:
break;
}
return SDL_APP_CONTINUE;
}
SDL_AppResult SDL_AppIterate(void* appstate)
{
SDL_SetRenderDrawColor(renderer, 255, 255, 255, SDL_ALPHA_OPAQUE);
SDL_RenderClear(renderer);
SDL_RenderPresent(renderer);
if (childRenderer)
{
SDL_SetRenderDrawColor(childRenderer, 0, 0, 255, SDL_ALPHA_OPAQUE);
SDL_RenderClear(childRenderer);
SDL_RenderPresent(childRenderer);
}
return SDL_APP_CONTINUE;
}
void SDL_AppQuit(void* appstate, SDL_AppResult result)
{
if (childRenderer)
SDL_DestroyRenderer(childRenderer);
if (childWindow)
SDL_DestroyWindow(childWindow);
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
SDL_Quit();
}
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자식 윈도우에서 ESC키를 누르면 자식 윈도우만 종료된다.
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