Re: transparent “multiline” UITextField

[Scott Morrow]

Brilliant!
Thank you, Devin.
—
Scott

On Apr 3, 2014, at 8:13 AM, Devin Asay <devin_asay at byu.edu> wrote:

> 
> On Apr 3, 2014, at 12:33 AM, Scott Morrow <scott at elementarysoftware.com>
> wrote:
> 
>> I’m trying to make a transparent “multiline” UITextField in iOS.  Unfortunately, it remains opaque both in the simulator and on an actual device.  If I switch the style of the UITextField to “input” then it becomes transparent.  I’m doing something along the lines of:
>> 
>> mobileControlCreate "multiline", pFieldName
>> mobileControlSet pFieldName, "rect", tRect
>> mobileControlSet pFieldName, "opaque", "false"
>> mobileControlSet pFieldName, "visible", “true"
>> 
>> I’m suspicious that it may be operator error since I can’t get it working under the last several previous LC versions and I didn’t notice a bug report. Suggestions?
>> (tested with LC 6.1.3,  6.5.2,  6.6, 6.7dp1 and 6.6.1rc1 Commercial)
> 
> Scott,
> 
> I had puzzled over this before, too. It turns out, a little confusingly, that you have to set the alpha channel on the backgroundColor rather than the opaque property:
> 
>  mobileControlSet pFieldName, "backgroundColor", "255,255,255,0"
>  mobileControlSet pFieldName, "opaque", false
> 
> I tried it with the opaque property set to both true and false; it didn't seem to make any difference. In fact, it worked fine without setting the opaque property.
> 
> The old iOS release notes (and the current dictionary entry for mobileControlSet) give a confusing description of the opaque property of mobile native controls:
> 
> "Set to false if the control should be rendered with transparency. In particular, set this control to true if you set a backgroundColor that is not fully opaque."
> 
> Months ago I had printed out the release notes for closer study. Next to that paragraph I penciled in the comment "?". Indeed.
> 
> Can anyone explain what that means?
> 
> Regards,
> 
> Devin
> 
> 
> 
> 
> Devin Asay
> Office of Digital Humanities
> Brigham Young University
> 
> 
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