Can't add component in 64 bit mode

[Attila Kovacs 617]

I made a small component which I can't add to a form if the target is x64. In 32bit mode I can. (No error, just won't work in the IDE)

What did I screw up?

 

DesignIntf and DesignEditors units are used.

 

[Lajos Juhász 240]

Try to add https://docwiki.embarcadero.com/Libraries/Alexandria/en/System.Classes.ComponentPlatformsAttribute

 

type
  [ComponentPlatformsAttribute(pidWin32 or pidWin64)] // Only supported on Win32 and Win64
  TMyComponent = class(TComponent)

[Attila Kovacs 617]

@Lajos Juhász I'll try. 

 

By the way, I think I should separate runtime from designtime and I think I did not do it yet. 😮