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WindowFromPoint malfunctions for x64 WPF application.

See original GitHub issue

.NET Core Version: (6.0.202)
Windows version: (Windows 11 21H2)
Does the bug reproduce also in WPF for .NET Framework 4.8?: Test for 4.7.1 reproduced successfully.

Problem description: Native function WindowFromPoint cannot be used to obtain handle to windows in x64 WPF application.
When attempting to get a window from .NET WPF process(no matter it’s a remote process or the current process), it returns the ‘background’ window as if the WPF window does not exist.
This problem disappeared if PlatformTarget property in ‘.csproj’ file is set to x86(default x64 in the following project).

Minimal repro: WpfApp1.zip in which is a draggable cross. Dragging the cross to any point at the window itself does not work.

Issue Analytics

State:
Created a year ago
Comments:8 (4 by maintainers)

Top GitHub Comments

1reaction

Qiu233commented, Jul 12, 2022

Thanks. Problem solved.

1reaction

Qiu233commented, Jul 12, 2022

@Qiu233 What is it's tmodloader 1.4.3.6 means?

It’s a modified game, running in .NET 6 x64.

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