HOWTO: Capitalise letters, and remove spaces in textbox as you type

[TimAI2]

Little routine to capitalise letters as you type in a textbox, along with removal of spaces if typed 

Uses Taifun's Textbox extension

[Taifun]

alternatively you might want to look into the textbox extension, which offers an AfterTextChanged event, so you do not need a clock anymore...

Taifun

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Trying to push the limits of App Inventor! Snippets, Tutorials and Extensions from Pura Vida Apps by Taifun. 

[TimAI2]

I didn't spot that!

Thanks Taifun

[Abraham Getzler]

If you want to avoid extensions, you can use a button or label to hold

the cleaned text, and a Clock to sweep cleaned data frequently from

a TextBox.  In this example, I use a button to show the cleaned text,

to offer backspace deletion and focus transfer to the real text input box.

ABG

[TimAI2]

Tried with the AfterTextChanged

Testing in companion I get this error:

on entering a single letter there is a delay of a second or two, then up pops message, but routine inside the AfterTextChanged event does complete. Same problem for next letter, then app killed and causes emulator reboot !!

Blocks

[Taifun]

you created an endless loop...

to avoid that, you might want to use a boolean variable while setting the text inside that event
and before setting the text, check that boolean variable

[TimAI2]

Ahhh, one of ABG's ouroborous' ;)

These blocks seem to resolve it