Hey there! Let's work through this image loading issue you're hitting—since you're used to Linux development, Windows has a few quirks with working directories and paths that are likely the culprit here. Let's break down the possible fixes step by step:

1. Confirm Your Working Directory in VS Code #

On Linux, VS Code usually runs your program with the project root as the working directory, but Windows doesn't always default to that. If your toto.png is in the project root but VS Code is looking elsewhere, it'll fail to find the file.

• Open your .vscode/launch.json file (if you don't have one, generate it by going to the Run and Debug tab, clicking "create a launch.json file", and selecting C++).
• Add or modify the cwd field to point to your project root:

  "configurations": [
      {
          // ... other settings ...
          "cwd": "${workspaceFolder}"
      }
  ]
  

• To double-check, add a line to your code to print the current working directory (requires C++17):

  #include <filesystem>
  // ... inside DrawWindow() ...
  std::cout << "Current working dir: " << std::filesystem::current_path() << std::endl;
  

  Run the program and make sure this path matches where toto.png is stored.

2. Test with an Absolute Path First #

Rule out relative path issues entirely by using an absolute path to your image. Windows accepts both forward slashes (easier, no escaping) or double backslashes:

// Forward slash example
if (!texture.loadFromFile("C:/YourUsername/Projects/2048/toto.png")) {
    std::cerr << "Load failed!" << std::endl;
}
// Double backslash example (needs escaping)
if (!texture.loadFromFile("C:\\YourUsername\\Projects\\2048\\toto.png")) {
    std::cerr << "Load failed!" << std::endl;
}

If this works, you know the problem is with relative paths and can focus on fixing the working directory.

3. Get Detailed Error Messages from SFML #

The generic "Failed to load image" message isn't helpful—SFML can tell you exactly what went wrong. Modify your load call to check the return value and print the error stream:

sf::Texture texture;
if (!texture.loadFromFile("toto.png")) {
    std::cerr << "Failed to load image! Details: " << sf::err() << std::endl;
}

This will tell you if the file is missing, corrupted, or in an unsupported format.

4. Verify the Image File is Valid #

Even if you copied the file, it might be corrupted or not a valid PNG:

• Open toto.png with Windows Paint or another image viewer to confirm it displays correctly.
• Ensure it's a standard PNG format (SFML supports 8-bit, 24-bit, and 32-bit PNGs with or without alpha channels—avoid exotic encodings).

5. Check Your Build Output Directory #

If you're using a build system like CMake, your executable might be in a build subfolder instead of the project root. In this case, the relative path looks for the image next to the exe, not in the project root. Fix this by:

• Copying toto.png directly into the folder where your .exe is generated, or
• Adding a build step to copy resources automatically. For CMake, add this line to your CMakeLists.txt:

  file(COPY ${CMAKE_SOURCE_DIR}/toto.png DESTINATION ${CMAKE_BINARY_DIR})
  

Quick Code Fix: Move Drawing Out of the Event Loop #

While not related to image loading, your current code draws the sprite inside the event loop, which means it only draws when an event occurs. Fix this to ensure consistent rendering:

void WindowHandling::DrawWindow() {
    sf::Texture texture;
    sf::Sprite sprite;
    if (!texture.loadFromFile("toto.png")) {
        std::cerr << "Failed to load image! Details: " << sf::err() << std::endl;
    }
    sprite.setTexture(texture);
    std::unique_ptr<Grid> Map(new Grid());

    while (_window.isOpen()) {
        // Handle events FIRST
        while (_window.pollEvent(_event)) {
            if (_event.type == sf::Event::Closed)
                _window.close();
        }

        // Clear, draw everything, then display
        _window.clear(sf::Color(220, 220, 220));
        Map->CreateGrid(_window);
        _window.draw(sprite);
        _window.display();
    }
}

内容的提问来源于stack exchange，提问作者Thomas_Vcheck