1.4.1 x64: twain Source and windows messages

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hvdev
Posts: 3
Joined: Thu Jan 19, 2023 3:04 pm

1.4.1 x64: twain Source and windows messages

Post by hvdev »

XnView: MP 1.4.1 - 64 bit
OS: Windows 64bit

Hello. I am writing own twain Source and have a problem with windows messages transferring from Source -> xnview -> Source.
According to TWAIN-2.4-Specification, page 645, the application must pass all messages to the source (in enabled state).
With XnView MP x64 the source does not receive messages what sent to the app handle.

To reproduce:
1. install my modified sample Source to windows/twain32/
2. enable the Source
3. press PostMSG button

Actual behaviour (bug): nothing happened

Expected behaviour: messagebox will appear (screenshot from XnView MP 32bit)
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xnview
Author of XnView
Posts: 44009
Joined: Mon Oct 13, 2003 7:31 am
Location: France

Re: 1.4.1 x64: twain Source and windows messages

Post by xnview »

could you try this version?
Pierre.
hvdev
Posts: 3
Joined: Thu Jan 19, 2023 3:04 pm

Re: 1.4.1 x64: twain Source and windows messages

Post by hvdev »

Works as expected, the issue doesn't reproduce.
hvdev
Posts: 3
Joined: Thu Jan 19, 2023 3:04 pm

Re: 1.4.1 x64: twain Source and windows messages

Post by hvdev »

The issue is still present in version 1.7.2