Caret blinking stops after ~5 seconds in wxTextCtrl on Windows (Issue #26662)

[MrWeiCodes]

MrWeiCodes created an issue (wxWidgets/wxWidgets#26662)

Platform and version information

• wxWidgets version :master (commit 055d882)
• wxWidgets port:wxMSW
• OS:Windows 10
• Controls：wxTextCtrl
• IDE：Visual Studio 2022

Steps to reproduce

1. Create a minimal sample with a wxFrame containing a wxTextCtrl (single-line or multi-line).
2. Run the application.
3. Focus the wxTextCtrl so the caret appears and starts blinking.
4. Observe the caret for about 5 seconds without touching the mouse or keyboard.
5. After roughly 5 seconds the blinking stops. The caret remains visible but no longer alternates between visible and hidden.
6. Move the mouse slightly or click inside the control – the blinking starts again but stops once more after ~5 seconds.

Code Example:
m_textCtrl1 = new wxTextCtrl( this, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize, 0 );

Expected behavior

The caret should blink continuously while the wxTextCtrl has focus, regardless of mouse movement or inactivity.

Actual behavior

The caret blinks for approximately 5 seconds and then freezes. It appears to “wake up” only when some input event occurs, only to freeze again shortly after.

Additional information

It seems that all components with a cursor have this issue, including some software built with older versions of wx.

Screenshots / Video

1.gif (view on web)

For example, the list in wxFormBuilder
1.gif (view on web)

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[PB]

PBfordev left a comment (wxWidgets/wxWidgets#26662)

This is a native behaviour which can be observed everywhere in Windows at least since v10 (e.g., the file name field in the Open/Save dialog, when renaming a file in Explorer, or typing the command in the Run dialog).

See also e.g. https://superuser.com/questions/1436937/cursor-stops-blinking-after-a-few-seconds-on-windows-10

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[MrWeiCodes]

MrWeiCodes left a comment (wxWidgets/wxWidgets#26662)

Thanks, this is actually a native Windows behavior, which is really surprising.

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[MrWeiCodes]

Closed #26662 as completed.

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