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issue-#33 adding platform detection for wine, Windows 7, 8

https://forum.blackboxframework.org/viewtopic.php?t=198

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issue-#33 adding platform detection for wine, Windows 7, 8

Posted: Thu Mar 26, 2015 11:07 am
by Josef Templ
A separate issue and topic branch for detection of wine and Windows 7, 8 has been added.
The changes are as proposed in CPC 1.7 rc5 items 41 and 42.

I addition, I fixed a bug in HostDialg.IsWine: the flag hook.isWine has not been set anywhere.
It needs to be set to TRUE in case of returning TRUE in order to avoid repeating the
Wine detection steps in later calls.
I also removed "OR Dialog.IsWine()" in DevRBrowser because it is implied by Dialog.IsWindows().
Helmut, could you please check the bug fixes?

I also added the changes to the Dialog docu file.

Pease see the diffs at http://redmine.blackboxframework.org/pr ... 2b772f9d85.

- Josef

Re: issue-#33 adding platform detection for wine, Windows 7,

Posted: Thu Mar 26, 2015 1:32 pm
by Ivan Denisov
The windows 10 is coming soon, so there will be more than 10 versions of Windows. I am suggesting to prevent this event and change constants to 100-199 - windows, 200-299 - mac, 300-399 - linux.

Re: issue-#33 adding platform detection for wine, Windows 7,

Posted: Thu Mar 26, 2015 1:35 pm
by Bernhard
just a side note: According to Wine developer FAQ 5.5 (see: http://wiki.winehq.org/DeveloperFaq#hea ... 05ac02f350) it is a bad idea to program around a bug in Wine.

But I do not find any such usage in the proposed diffs, so it is apparently ok and it is definitely the recommended way to detect if an application is running under Wine.

--
Bernhard

Re: issue-#33 adding platform detection for wine, Windows 7,

Posted: Thu Mar 26, 2015 2:35 pm
by Josef Templ
Ivan Denisov wrote:The windows 10 is coming soon, so there will be more than 10 versions of Windows. I am suggesting to prevent this event and change constants to 100-199 - windows, 200-299 - mac, 300-399 - linux.
Until now the standard way of detecting a Windows platform was "Dialog.platform DIV 10 = 1".
That's why the Windows platform numbers are kept between 10 and 19.
The same pattern applies to MacOS (platform DIV 10 = 2).

For Windows 10 we could (re)use the unused number 11.

Not very nice, I know, but a compromise for portability of code that may
exist outside the BlackBox distribution.

Needs to be discussed by the center.

- Josef

Re: issue-#33 adding platform detection for wine, Windows 7,

Posted: Thu Mar 26, 2015 2:37 pm
by Josef Templ
bernhard wrote:just a side note: According to Wine developer FAQ 5.5 (see: http://wiki.winehq.org/DeveloperFaq#hea ... 05ac02f350) it is a bad idea to program around a bug in Wine.

But I do not find any such usage in the proposed diffs, so it is apparently ok and it is definitely the recommended way to detect if an application is running under Wine.

--
Bernhard
Unfortunately, there is no choice. Since Wine does not have the same symbol fonts as Windows has,
we must make a distinction in some situations. We are not in a position to fix this 'bug' in Wine.
You will see a usage of IsWine() in issue-#32, for example, at least unless somebody finds another
way to get the arrow symbols for folds on all platforms.

- Josef

Re: issue-#33 adding platform detection for wine, Windows 7,

Posted: Thu Mar 26, 2015 3:40 pm
by Ivan Denisov
Josef Templ wrote:at least unless somebody finds another way to get the arrow symbols for folds on all platforms.
We can avoid this by drawing arrows as view like it is done in DevSelectors module. I think this is good way. What do everybody think?
I am also do not like that we use some QuasiHost features inside portable modules...

Re: issue-#33 adding platform detection for wine, Windows 7,

Posted: Thu Mar 26, 2015 4:44 pm
by Josef Templ
What is DevSelectors?
I have never used it.

Re: issue-#33 adding platform detection for wine, Windows 7,

Posted: Thu Mar 26, 2015 5:14 pm
by Ivan Denisov
Josef Templ wrote:What is DevSelectors?
I have never used it.
Useful feature for testing and cross-platform development. Used rare at final stages.
In our case it is an example of text in-line controls which are drawn without fonts.

http://oberoncore.ru/wiki/blackbox/devselectors
selectors.png
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Re: issue-#33 adding platform detection for wine, Windows 7,

Posted: Thu Mar 26, 2015 5:25 pm
by Ivan Denisov
During this discussion some clear view has come, that we should not add Wine detection, but draw folds without using Font.

Re: issue-#33 adding platform detection for wine, Windows 7,

Posted: Thu Mar 26, 2015 7:00 pm
by Bernhard
that we should not add Wine detection
hmm, no, I do not object against Wine detection, but we should carefully think when using it in some "higher" level modules, i.e. outside Kernel, subsystem Host, and so on ...

Also as far as I understand Ivan, the error/bug occurs also in a russian Windows. So it might also occur in asian or other non-latin script Windows. But that is (at least for me) very difficult to check.

A bitmap might be a solution, but how does this scale with font size?
--
Bernhard
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