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Add validation to the Send form (address and amount) #490
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            johnny9
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    | @MarnixCroes do you mind re-reviewing this change? | 
              
                    MarnixCroes
  
              
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                    Aug 6, 2025 
                  
              
              
            
            
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- The Amount must be greater than zerowhile there is only the placeholder text is a bit silly.
 Which can be repro'd by entering 0 and then deleting it.
 
- The amount sometimes changes and gets negative when entering large numbers:
 
Screencast.from.2025-08-06.11-11-16.webm
Screencast.from.2025-08-06.11-13-03.webm
| } else if (IsValidDestinationString(m_address.toStdString(), *CChainParams::TestNet())) { | ||
| setAddressError(tr("Address is valid for testnet, not the current network")); | ||
| } else { | ||
| setAddressError(tr("Invalid address format")); | 
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        Suggested change
      
    | setAddressError(tr("Invalid address format")); | |
| setAddressError(tr("Invalid address")); | 
maybe better?
  
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These changes add properties for the error strings used in the QML to SendRecipient and add validation methods that are checked when the relevant properties are changed by the user.
This is a port of #462 into the qt6 branch