[macOS] wxRichTextCtrl doesn't position and show candidate of IME correctly on macOS (Issue #24556)

crml2024

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May 25, 2024, 7:17:59 AMMay 25

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Description

Platform and version information

wxWidgets version you use: 3.2.5
wxWidgets port you use: wxOSX
OS and its version: macOS 14.4

Bug description:

richtext-test1.png (view on web)

When using wxRichTextCtrl (in arbitrary window) on macOS 14, the windows of the IME (Simplified Chinese in this case) for input is incorrectly placed at the bottom of the screen.

It seems that the general implementation of wxRichTextCtrl can't be correctly recongized by macOS as an input area. #18786 is somehow similar.

To Reproduce:

Build the sample in samples/richtext on macOS 14;
Run the program and select an input area.
Use an IME to input.

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VZ

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May 25, 2024, 9:59:17 AMMay 25

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Sorry, I know even less about IME under macOS than under the other platforms, so I have no idea how to fix this. Any ideas or PRs would be very welcome!

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Mark Roszko

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May 25, 2024, 1:39:50 PMMay 25

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Apparently -[NSTextInputClient firstRectForCharacterRange:] needs to be implemented in objective c. This provides the ime the bounding box of text to place against.