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delphichilkat

- dcc32 Error- Unit3.pas(79): E2010 Incompatible types: 'PWideChar' and 'WideString'

I received an error - In Delphi XE3 - using chilkat library . This is the error:

[dcc32 Error] Unit3.pas(79): E2010 Incompatible types: 'PWideChar' and 'WideString'

and this is a piece of my code that received this error : 

var  
 privKeyXml: PWideChar;  
...  
 privKeyXml := rsa.ExportPrivateKey();   
...

The ((ExportPrivateKey)) will Export the key in XML format ( As I read in the chilkat website ) How can I fix it ?

Solution

  • ExportPrivateKey() returns a WideString value:

    TChilkatRsa Delphi ActiveX Reference Documentation

    function ExportPrivateKey(): WideString;

    You can't assign a WideString to a PWideChar directly, you need to type-cast it, eg:

    var  
 privKeyXml: WideString;  
 privKeyXmlPtr: PWideChar;  
...  
 privKeyXml := rsa.ExportPrivateKey();   
 privKeyXmlPtr := PWideChar(privKeyXml);
...