TTF_OpenFont() --> is giving error

SDL Development
1

I am using the following command to compile
g++ s19_demo2.cpp -o s19_ttf $(pkg-config --cflags --libs sdl2) -lSDL2_ttf
& its giving an error

    Failed to load font : Couldn't open arial .ttf

does it requires any path for the font ??

Screenshot%20at%202018-07-21%2015-16-26
Screenshot at 2018-07-21 15-16-26.png1280×720 213 KB

2

I am compiling the following code–

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <iostream>
#include <SDL2/SDL.h>
#include <SDL2/SDL_ttf.h>

using namespace std;
using std::cout;
using std::endl;

int main(int argc, char *argv[])
{
  SDL_Window* window1;
  SDL_Renderer* renderer1;
  SDL_Surface* surface1;
  SDL_Texture* image_texture;
    SDL_Texture* text_texture;
    TTF_Font* myfont;
    SDL_Color colred = {255, 0, 0};

    SDL_Rect text_rect; 
    text_rect.x = 0;  
    text_rect.y = 0; 
    text_rect.w = 100;
    text_rect.h = 100; 


  window1 = SDL_CreateWindow("my_example", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 640, 580, 0);
  renderer1 = SDL_CreateRenderer(window1, -1, SDL_RENDERER_ACCELERATED);

  surface1 = SDL_LoadBMP("/home/odroid/Downloads/t2.bmp");
  image_texture = SDL_CreateTextureFromSurface(renderer1, surface1);
  SDL_FreeSurface(surface1); 
  SDL_Rect SrcR;
  SDL_Rect DestR;

  /*SrcR.x = 0;
  SrcR.y = 0;
  SrcR.w = 640;
  SrcR.h = 580; */

  DestR.x = 0;
  DestR.y = 0;
  DestR.w = 640;
  DestR.h = 580;
//-----------------------------------------------------------------------------------------------------
    if ( TTF_Init() == -1 )
		cout << " Failed to initialize TTF : " << SDL_GetError() << endl;

    myfont = TTF_OpenFont("Sans.ttf", 12);
    if ( myfont == nullptr )
		cout << " Failed to load font : " << SDL_GetError() << endl;

    surface1 = TTF_RenderText_Solid(myfont, "hello", colred);
    text_texture = SDL_CreateTextureFromSurface(renderer1, surface1);
    SDL_FreeSurface(surface1); 
//------------------------------------------------------------------------------------------------------
  SDL_RenderCopy(renderer1, image_texture, NULL, &DestR);
    SDL_RenderCopy(renderer1, text_texture, NULL, &text_rect); 

  SDL_RenderPresent(renderer1);
  SDL_Delay(5000);

  SDL_DestroyTexture(image_texture);
    SDL_DestroyTexture(text_texture);
  SDL_DestroyRenderer(renderer1);
  SDL_DestroyWindow(window1);
    TTF_Quit();
  SDL_Quit();


  return 0;
}

And I don’t know why it is giving this error—

odroid@odroid:~/Desktop/is2/@_opencl/cl_sdl$ ./s19_ttf
Failed to load font : Couldn’t open Sans.ttf
Segmentation fault

3

also during executing the code, screen is also going blank for a second.

4

My initial guess is that it cannot find “Sans.ttf” is not the correct path.
But I cannot be sure as I don’t know how your folders and files are structured.

Do a quick test
Put a copy of the font in the same directory and as the textures,
myfont = TTF_OpenFont("/home/odroid/Downloads/Sans.ttf", 12);

This will let you know if its a path issue.

5

Thank you, it worked.
I copied sans.ttf into my working directory and it gave me the desired output.