添加项目文件。

Demo/main.cpp

@@ -0,0 +1,100 @@
+#define SDL_MAIN_HANDLED
+
+#include <iostream>
+
+#include <SDL.h>
+#include <SDL_ttf.h>
+#include <SDL_mixer.h>
+#include <SDL_image.h>
+#include <SDL2_gfxPrimitives.h>
+
+int main()
+{
+
+	SDL_Init(SDL_INIT_EVERYTHING);
+	IMG_Init(IMG_INIT_JPG | IMG_INIT_PNG);
+	Mix_Init(MIX_INIT_MP3);
+	TTF_Init();
+
+	Mix_OpenAudio(44100, MIX_DEFAULT_FORMAT, 2, 2048);
+
+//创建窗口和与之关联渲染器
+	SDL_Window* window = SDL_CreateWindow(u8"你好，世界 ", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, SDL_WINDOW_SHOWN);
+	SDL_Renderer* renderer = SDL_CreateRenderer(window,-1,SDL_RENDERER_ACCELERATED);
+
+//加载图像并创建纹理
+	SDL_Surface* suf_img = IMG_Load("avatar.jpg");
+	SDL_Texture* tex_img = SDL_CreateTextureFromSurface(renderer,suf_img);
+
+	TTF_Font* font = TTF_OpenFont("ipix.ttf", 32);
+	SDL_Color color = { 255,255,255,255 };
+	SDL_Surface* suf_text = TTF_RenderUTF8_Blended(font, u8"你好，世界", color);
+	SDL_Texture* tex_text = SDL_CreateTextureFromSurface(renderer, suf_text);
+
+	Mix_Music* music = Mix_LoadMUS("music.mp3");
+	Mix_FadeInMusic(music, -1, 1500);
+
+	int fps = 60;
+
+	bool is_quit = false;
+
+	SDL_Event event;
+	SDL_Point pos_cursor = { 0,0 };
+	SDL_Rect rect_img,rect_text;
+	Uint64 last_counter = SDL_GetPerformanceCounter();
+	Uint64 counter_freq = SDL_GetPerformanceFrequency();
+
+
+	rect_img.w = suf_img->w;
+	rect_img.h = suf_img->h;
+
+	rect_text.w = suf_text->w;
+	rect_text.h = suf_text->h;
+
+	while (!is_quit)
+	{
+		while (SDL_PollEvent(&event))
+		{
+			if (event.type == SDL_QUIT)
+			{
+				is_quit = true;
+			}
+			else if (event.type == SDL_MOUSEMOTION)
+			{
+				pos_cursor.x = event.motion.x;
+				pos_cursor.y = event.motion.y;
+			}
+		}
+
+		Uint64 current_counter = SDL_GetPerformanceCounter();
+		double delta = (double)(current_counter - last_counter) / counter_freq;
+		last_counter = current_counter;
+		if (delta * 1000 < 1000.0 / 60)
+			SDL_Delay((Uint32)1000.0 / 60 - delta * 1000); 
+
+		//处理数据
+		rect_img.x = pos_cursor.x;
+		rect_img.y = pos_cursor.y;
+		
+		rect_text.x = pos_cursor.x;
+		rect_text.y = pos_cursor.y;
+
+		SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
+		SDL_RenderClear(renderer);//清除渲染器
+
+		//渲染绘图
+		SDL_RenderCopy(renderer, tex_img, nullptr, &rect_img);//复制纹理到渲染器
+		filledCircleRGBA(renderer, pos_cursor.x, pos_cursor.y, 50, 255, 0, 0, 125);
+		SDL_RenderCopy(renderer, tex_text, nullptr, &rect_text);
+
+		SDL_RenderPresent(renderer);//更新屏幕显示
+
+	}	
+
+	return 0; 
+}
+
+
+
+/**SDL_FreeSurface：释放不再需要的 SDL_Surface。
+ SDL_DestroyTexture、SDL_DestroyRenderer 和 SDL_DestroyWindow：销毁纹理、渲染器和窗口。**/