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Kenny Young
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 Posted: Thu Nov 18, 2004 10:07 am Post subject: How do I change the panel colour at runtime if I only have t |
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I have a form with many TPanels. I would like at runtime change the colour of the panel by entering the caption of the panel, from some device. How can I do a search in the program to achieve this?
Like… caption == ‘cd’ colour =’RED’
Also, how can I retrieve the name of the icon image in a TImage component at runtime so that I can change the icon image?
Any help would be most appreciated.
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Steve Aletto
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| Posted: Thu Nov 18, 2004 1:22 pm Post subject: Re: How do I change the panel colour at runtime if I only ha |
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| Quote: | I have a form with many TPanels. I would like at runtime
change the colour of the panel by entering the caption of the
panel, from some device. How can I do a search in the program
to achieve this?
Like… caption == ‘cd’ colour =’RED’
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Try one of the following solutions:
void __fastcall TForm1::Button1Click(TObject *Sender)
{
for (int i = 0; i < Form1->ControlCount; i++)
{
if (Form1->Controls[i]->ClassNameIs("TPanel"))
{
TPanel *p = dynamic_cast<TPanel
*>(Form1->Controls[i]);
if (p->Caption == "cd") p->Color = clRed;
}
}
}
void __fastcall TForm1::Button5Click(TObject *Sender)
{
for (int i = 0; i < Form1->ControlCount; i++)
{
TPanel *p = dynamic_cast<TPanel *>(Form1->Controls[i]);
if (p->Caption == "cd") p->Color = clRed;
}
}
The first solution should be safer although the second works for
me as well.
| Quote: | Also, how can I retrieve the name of the icon
image in a TImage component at runtime so that
I can change the icon image?
I'd save it in a completely separate AnsiString variable. |
HTH,
Steve.
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