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  1. Core ReactOS
  2. CORE-15906

Clover.exe: CombineRgn seems to not create a clipping region correctly

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Details

    • Bug
    • Resolution: Unresolved
    • Major
    • None
    • None

    Description

      Clover.exe: Testcase and C code attached from Petzold's cd examples.
      Code is as simpler as possible:

      • CombineRgn which combines CreateRectRgn and CreateEllipticRgn
      • After combining, rays are traced starting from middle of the window outwards clipped by such region
        Picture1.jpg compares ReactOS vs Windows testcase.
        Some hints:
        Picture2.jpg shows what happens when the Clover.exe window is resized. As you resize the window, making it smaller, you can see how it starts to look similar to Windows expected behavior. Clipping region as the width and height changes seems to be miscalculated.
        Tested in 1001-g0c4d21a iso

      https://www.codeproject.com/Articles/2095/A-Guide-to-WIN32-Clipping-Regions

      Attachments

        1. snapshot146.png
          snapshot146.png
          61 kB
        2. snapshot145.png
          snapshot145.png
          60 kB
        3. region.patch
          18 kB
        4. region_1.patch
          5 kB
        5. Picture2.jpg
          Picture2.jpg
          258 kB
        6. Picture1.jpg
          Picture1.jpg
          636 kB
        7. image-2024-05-19-17-21-31-460.png
          image-2024-05-19-17-21-31-460.png
          8 kB
        8. clover frankie.webm
          1.72 MB
        9. Clover.exe
          176 kB
        10. Clover.c
          4 kB
        11. Clover_New_Clipper.exe
          48 kB

        Issue Links

          blocks

          Bug - A problem which impairs or prevents the functions of the product. CORE-7153 METABUG: Petzold's Testcases

          • Major - Major loss of function.
          • Open
          relates to

          Bug - A problem which impairs or prevents the functions of the product. CORE-16626 Regression, MediaPlayer Classic MPC HC 1.7.13, part of the GUI is not drawn at all, is transparent

          • Major - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. CORE-16680 Regression: our Solitaire and Spider Solitaire have a transparent background with VBox Guest Additions installed

          • Major - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. CORE-6897 SetWindowRgn doesn't work

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Activity

            People

              bug zilla Bug Zilla
              vicmarcal vicmarcal
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              Dates

                Created:
                Updated: