I am currently using Windows 7. I do not have Windwos 8, so I cannot say
how this behavior has changed. If you have any code you want me to try I am
more then willing to do so, however it is unlikely the behavior has changed
significantly. I do notice that on windows many programs seem to share
their main icon with all of their subwindows.
I am not sure I fully understand your problem. Is there some negative side
effect to changing the window class? Perhaps it's possible to call
LoadIcon+SetClassLong and then call LoadImage+WM_SETICON to replace the
icon on individual windows? If it works, this means the initial icon would
be set as the default, and later icons would replace it on the designated
windows. But this behavior is somewhat confusing, and might be better done
with a "DEFAULT_ICON" attribute (if it works).
The internet doesn't seem to have much of a solution to this problem and it
is not well documented. The only explanation I could find is here
http://blog.barthe.ph/2009/07/17/wmseticon/
Regards,
Chase
On Tue, Apr 15, 2014 at 2:55 PM, Antonio Scuri <[email protected]>wrote:
> Hi Chase,
>
>
>
> I see two differences here. In IUP we use LoadImage instead of LoadIcon
> and WM_SETICON instead of SetClassLong.
>
>
>
> I think that the HICON returned in LoadImage and LoadIcon are the same.
> So the problem should be in the second difference.
>
>
>
> But I cannot use SetClassLong or all IupDialogs will have the same Icon,
> because it will change the Window Class (even using an HWND as parameter)
> and all IupDialogs use the same Window Class.
>
>
>
> In WM_SETICON there is a parameter that specifies the size of the icon,
> and currently we are using ICON_BIG. The other flag is ICON_SMALL.
> Unfortunately they cannot be combined, so maybe we have to call WM_SETICON
> twice. I tried that and it doesn’t seem to work.
>
>
>
> Actually I tried many combinations of LoadImage/LoadIcon and
> SetClassLong/WM_SETICON(SMALL/BIG), and none of them work. Except
> LoadIcon+SetClassLong which affected all the dialogs.
>
>
>
> But I tested only in Windows 8. Maybe in older systems the result is
> different. Which system are you using?
>
>
>
> Best,
>
> Scuri
>
>
>
>
>
> *From:* Chase S [mailto:[email protected]]
> *Sent:* segunda-feira, 14 de abril de 2014 19:48
> *To:* [email protected]
> *Subject:* [Iup-users] IUP Windows Multi-Icon Resource
>
>
>
> In IUP, when I specify a resource as the ICON for IUP, only the first is
> used for both the window and the taskbar. However my icon resource has
> multiple sizes of icons.
>
>
>
> I can get around this by using a bit of the windows API and the WND from
> the dialog. However I think this somewhat defeats the purpose of IUP. Is
> there a way to handle this with just IUP?
>
>
>
> Here is my solution, if it is of any help. http://pastebin.com/hyESmJqj
>
>
>
> Regards,
>
> Chase
>
>
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