Calling CreateParams of an inherited component

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Calling CreateParams of an inherited component

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I have a component inherited from a TEdit . I already have an override of CreateParams and by default it has the following parameters:

Params.Style := Params.Style or WS_CLIPCHILDREN or ES_MULTILINE or ES_AUTOHSCROLL;

But sometimes, I would like to change these parameters by removing ES_MULTILINE .

Specifically, in the Enter of the component, I would like to add the ES_MULTILINE , and in Exit I would like to remove it.

Is it possible? If so, how?

delphi

asked by anonymous 27.09.2017 / 16:28

1 answer

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score 0 · Accepted Answer

I think this is your problem link

I'm not going through the code that is already in the link but basically it is using RecreateWnd but with a boolean flag to control the number of times it is called.

Create a flag in your class
In the ENTER event, make the RecreateWnd if the flag is false
In the ENTER event, set the flag to true
In the EXIT event, return the flag to false