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rob kemp · Guest

Hi,

I got the following error when I execute my application (Abstract Error)
I googled on it and found some info that it's related to the
creation of TStrings at runtime.

As a matter of fact, my application creates strings (or labels) at runtime using:

TStaticText* text = new TStaticText(this);
//TLabel* text = new TLabel(this); // i tried this and nothing changed
text->Parent = this;
text->Color=clWhite;
text->Font->Size=10;
text->Top=10;
text->Left=100;

How can I solve this problem? has anyone seen this error before?
As indicated above, I replaced StaticText by Label and nothing really changed.

Thanks in advance for your help

Rob

Remy Lebeau (TeamB) · Guest

"rob kemp" <NoSpam (AT) yahoo (DOT) com> wrote

rob kemp · Guest

Remy,

I chased the error and here is what I found.

What is creating the abstract error is the following:

- in my applications, I created lables at run time
and store the pointers in a TList, so the user can clear
them (make them invisible) when desired

TList *stList = new TList; //Create the list that stores the pointers

//Create labels at run time
TLabel* text = new TLabel(this);

text->Parent = this;
text->Color=clWhite;
text->Font->Size=8;
text->Caption="Text Here";
stList->Add(text); //add it to the list

//below is what causing the abstract error
// Make all the created labels invisible
if (stList->Count>0)
{
for (int i = 0; i < stList->Count; ++i)
{
TStaticText* st = static_cast<TStaticText*>(stList->Items[i]);
st->Visible=false;
st = NULL;
}
}

What's wrong with the code? how can I avoid the abstract error

thanks in advance

"Remy Lebeau (TeamB)" <no.spam (AT) no (DOT) spam.com> wrote:

JD · Guest

"rob kemp" <NoSpam (AT) yahoo (DOT) com> wrote:

Daniel Mayo · Guest

When a TGroupBox is disabled, any radioboxes or checkboxes within it are
disabled, but are not greyed out.. how can I get the radiobuttons and
checkboxes to grey out when their parent is disabled?