Im creating my own component (non-visual) as a desant of TComponent.
In the application that uses the component I guess I have to call the Create-constructor of my component. I name the instance of my component 'MD1' in the application. So what I say is that I have to call MD1.Create(?).
I cant find out where to place the MD1.Create(?) and as use can see I dont know which parameter to send.
The form holding the component is called Form1 and I have tried to make an OnCreate-procedure for Form1 (called FormCreate).
In Form1.FormCreate I wrote a line like this:
but when I run the application I get a run-time-error in the above line saing something like...
Acess-voilation....FFFFFFFF.... (you know it).
I figure that Self (From1) is not even Created itself by now (when FormCreate is called).
By the way. What I want to know is:
- Where should I put MD1.Create(?) and what parameter should I send with it.
- I would also like to know where Delphi Creates all the components of the form that is put on is visualy.
A lot of questions regard threads in Delphi.
One of the more specific questions is how to show progress of the thread.
Updating a progressbar from inside a thread is a mistake.
A solution to this would be to send a synchronized message to the…
In my programming career I have only very rarely run into situations where operator overloading would be of any use in my work. Normally those situations involved math with either overly large numbers (hundreds of thousands of digits or accuracy re…
In an interesting question (https://www.experts-exchange.com/questions/29008360/) here at Experts Exchange, a member asked how to split a single image into multiple images. The primary usage for this is to place many photographs on a flatbed scanner…