[SOLVED] How can all controls become readonly suddenly?
lazarus / 31-LCL

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egsuh · 2021-03-13 03:13

I have been using my own application with satisfaction --- but
suddenly the controls became read-only. I cannot write anything. But
they display the content correctly.

There are several RTTI controls, but other normal controls are also
read-only. Is it possible to set read-only at TabSheet,  Pagecontrol,
or Panel level?

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egsuh · 2021-03-13 04:20

I found the reason.... It was because I put

    Key:= 0; 

at the end of KeyDown event handler of the form.