Common Relative Mode Failures

1#include <SDL.h>
2#include <iostream>
3
4bool CheckRelativeMode() {
5  if (SDL_SetRelativeMouseMode(SDL_TRUE) < 0) {
6    std::cout << "Relative mode failed: "
7      << SDL_GetError() << '\n';
8    return false;
9  }
10
11  // Disable it again immediately
12  SDL_SetRelativeMouseMode(SDL_FALSE);
13  return true;
14}
15
16int main() {
17  SDL_Init(SDL_INIT_VIDEO);
18
19  if (!CheckRelativeMode()) {
20    std::cout << "System may have input "
21      "restrictions\n";
22  }
23
24  SDL_Quit();
25  return 0;
26}

1#include <SDL.h>
2#include <iostream>
3
4class InputManager {
5 public:
6  bool EnableRelativeMode(SDL_Window* Window) {
7    // Ensure window has focus first
8    SDL_RaiseWindow(Window);
9
10    if (SDL_SetRelativeMouseMode(SDL_TRUE) < 0) {
11      std::cout << "Failed to enable relative mode";
12      return false;
13    }
14    return true;
15  }
16};

1#include <SDL.h>
2#include <iostream>
3
4class MouseHandler {
5public:
6  bool Initialize() {
7    if (SDL_SetRelativeMouseMode(SDL_TRUE) < 0) {
8      std::cout << "Relative mode unavailable:\n"
9        << "- Check if running as administrator\n"
10        << "- Verify input permissions\n"
11        << "- Update mouse drivers\n"
12        << "- Disable tablet input devices\n";
13      return false;
14    }
15    return true;
16  }
17};