How to Customize the Icon or Value Help Indicator in sap.m.Input?

I am working with sap.m.Input in a UI5 application and need to replace the standard value help icon.

<Input
  valueHelpIcon="sap-icon://search"
  showValueHelp="true"
  valueHelpRequest=".onValueHelpRequest"
/>

How can I change the default value help icon? The valueHelpIcon property doesn't seem to work in sap.m.Input.

Can I completely replace the default value help indicator with a custom icon or button? If so, what's the best approach?

What I've tried:

• Setting valueHelpIcon="sap-icon://custom-icon" (no effect).
• Exploring custom CSS to modify the default icon.

I'd appreciate any guidance or alternative approaches to achieve this customization.

The Input control doesn't allow you to specify which icon should be used as value-help icon. You can see in line 415 of Input.js that the value help icon is hard-coded.

However, if you need a version of the input control that does allow you to specify which icon is used, I would suggest to create a custom Input control. This Input control could be as simple as subclass of the standard UI5 Input control. And then just override its _getValueHelpIcon method.