<div>
<br />
too bad.....<br />
<br />
<br />
then i'm going for a split between you two, because you both added to the final aswer<br />
<br />
are you ok with that?
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<div>
Fine by me.<br />
<br />
Thanks for-Soft, I couldn't remember. &nbsp;I thought it was not allowed but wasn't sure.<br />
<br />
mlmcc<br />

</div>


<div>
Glad i could help<br />
<br />
mlmcc
</div>


<div>
Although this thread is closed, I would like to add a bit of a correction. &nbsp;It is possible to assign a (default) value to a parameter, rendering it optional. &nbsp;You can also do some trickery with function overrides.<br />
<br />
Reference:<br />
<a href="http://delphi.about.com/od/beginners/l/aa050900a.htm" rel="ugc">http://delphi.about.com/od/beginners/l/aa050900a.htm</a><br />
<br />
======================<br />
Thanks to Netminder for allowing me to add this post-PAQ comment.
</div>


<div>
<br />
cool!<br />
<br />
but since that page is for delphi,<br />
does that work in pascal too? 
</div>


<div>
according to the content at the link, this applies to Object Pascal, and started with Delphi 4.
</div>


<div>
<div class="content wysiwyg-content">
hello experts,<br />
<br />
<br />
as the title states, <br />
i would like to have a procedure with an optional parameter,<br />
<br />
is this possible, and so yes, how?<br />
<br />
<br />
example:<br />
procedure WriteXY(str:string;X:byte;<wbr />Y:byte; ?Optional? Color as byte);<br />
<br />
so that Color is not giving an error when it isn filled<br />
<br />
mark
</div>
</div>


hello experts,


as the title states, 
i would like to have a procedure with an optional parameter,

is this possible, and so yes, how?


example:
procedure WriteXY(str:string;X:byte;Y:byte; ?Optional? Color as byte);

so that Color is not giving an error when it isn filled

mark


too bad.....


then i&#39;m going for a split between you two, because you both added to the final aswer

are you ok with that?

Fine by me.

Thanks for-Soft, I couldn&#39;t remember.  I thought it was not allowed but wasn&#39;t sure.

mlmcc


Although this thread is closed, I would like to add a bit of a correction.  It is possible to assign a (default) value to a parameter, rendering it optional.  You can also do some trickery with function overrides.

Reference:
http://delphi.about.com/od/beginners/l/aa050900a.htm

======================
Thanks to Netminder for allowing me to add this post-PAQ comment.


cool!

but since that page is for delphi,
does that work in pascal too? 

according to the content at the link, this applies to Object Pascal, and started with Delphi 4.

Procedure optional param

Pascal is an influential imperative and procedural programming language, largely (but not exclusively) intended to teach students structured programming and data structuring. Pasca was implemented on a wide range of architectures, from early PCs to mainframes. Pascal derivatives include OOP-based Object Pascal (used in Delphi and Lazarus/Free Pascal). Pascal is a purely procedural language and includes control statements with reserved words, but has many data structuring facilities and other abstractions like type definitions, records, pointers, enumerations, and sets.