Header file not found even I had installed library


Hello! I am facing problem with new IDE I have successfully installed library for TFT display then from examples of TFT library when I open that and compile then compilation error appears. I don't know why this happen even if I installed library.
same problem occur with other libraries that when i install and open examples some of them don't compile.
I will glad if someone guide me here.
thanks in advance.

Hi @shujah. I'm going to ask you to post some additional information that might help us to identify the problem.

Please do this:

  1. Select File > Preferences from the Arduino IDE's menus.
  2. Check the box next to "Show verbose output during: [] compilation".
  3. Click the OK button.
  4. Select Sketch > Verify/Compile from the Arduino IDE's menus.
  5. Wait for the compilation to end.
  6. Right click on the black "Output" pane at the bottom of the Arduino IDE 2.x window.
  7. From the context menu, click Copy All.
  8. Open a forum reply here by clicking the Reply button.
  9. Click the </> icon on the post composer toolbar. This will add the forum's code block markup (```) to your reply to make sure the error messages are correctly formatted.
    Code block
  10. Press Ctrl+V. This will paste the compilation output into the code block.
  11. Move the cursor outside of the code tags before you add any additional text to your reply.
  12. Click the Reply button to post the output.

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