关于C#：SDL内存泄漏

SDL memory leak

所以我试图在SDL上做一些事情，但是在第一个程序上我有内存空间(是否存在IDK泄漏)，所以有一些代码：

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#include <stdio.h>
#include <SDL.h>
#include <SDL_image.h>
#include <SDL_ttf.h>
#define SCREENSIZEX 180
#define SCREENSIZEY 300
SDL_Window* mainwind = NULL;
SDL_Renderer* rend = NULL;
TTF_Font* Usefont = NULL;

int main(int argc, char* argv[])
{
SDL_Init(SDL_INIT_EVERYTHING);
Uint32 windowflags;
windowflags = SDL_WINDOW_SHOWN;
mainwind = SDL_CreateWindow("FooBar",
SDL_WINDOWPOS_CENTERED,
SDL_WINDOWPOS_CENTERED,
SCREENSIZEX,
SCREENSIZEY,
windowflags);
rend = SDL_CreateRenderer(mainwind, -1, SDL_RENDERER_ACCELERATED);
SDL_SetRenderDrawColor(rend, 255, 255, 255, 255);
int imgFlags = IMG_INIT_PNG;
IMG_Init(imgFlags);
TTF_Init();
Usefont = TTF_OpenFont("DOTMBold.TTF",90);

SDL_Surface* TextSurf = NULL;
SDL_Texture* TextTexture = NULL;

SDL_Color UsingColor;
UsingColor.r=0;
UsingColor.g=255;
UsingColor.b=255;
UsingColor.a=100;

bool exit = false;
char Text[500];
int counter = 0;
SDL_Event evneet;
while(!exit)
{
SDL_PollEvent(&evneet);
SDL_RenderClear(rend);
counter++;
TextSurf = TTF_RenderUTF8_Blended(Usefont, Text, UsingColor);
TextTexture = SDL_CreateTextureFromSurface(rend, TextSurf);
SDL_FreeSurface(TextSurf);
TextSurf = NULL;
SDL_RenderCopy(rend, TextTexture, NULL, NULL);
TextTexture = NULL;
SDL_DestroyTexture(TextTexture);
SDL_RenderPresent(rend);
}
SDL_FreeSurface(TextSurf);
TextSurf = NULL;
SDL_DestroyTexture(TextTexture);
SDL_DestroyRenderer(rend);
SDL_DestroyWindow(mainwind);
SDL_Quit();
return 0;
}

问题：
一些截图

Idk如何解决此问题，并尝试进行许多释放和内存操作。
该程序仅执行一项任务。仅计数帧(在代码中仅显示0)
这是我尝试进行渲染的第三次尝试，但我总是得到相同的结果。
请帮忙！