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How do I change TIETextLayer properties in C++?

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FTKS

5 Posts

Posted - Jun 01 2022 : 05:35:09

Hello ImageEn Team,

after creating a textlayer in my ImageenView window.

I tried to access the properties of the TIETextLayer behind it based on the delphi examples given from the online documentation.
While the code itself does compile, accessing the properties leads to an access violation error. What am I doing wrong/ what am I missing?

I am using C++ Builder 10.2 Tokyo and ImageEn 8.7.6.

This is the code which I have tried:

ImageEnView1->LayersAdd(ielkText);

//Either
TIETextLayer(ImageEnView1->CurrentLayer).Text = "This is a test text message"; //Leads to the access violation error

//or
TIETextLayer* txtlayer = new TIETextLayer(ImageEnView1->CurrentLayer); //also leads to the access violation error
txtlayer->Text = "This is a test text message";

Thank you in advance

With best Regards

Stefan

xequte

38222 Posts

Posted - Jun 08 2022 : 19:26:50

Hi Stefan

You should use:


   ((TIETextLayer*)ImageEnView1->CurrentLayer)->Text = "Test";

Or:


void __fastcall TForm1::Button1Click(TObject *Sender)
{
  ImageEnView1->LayersAdd(ielkText);

  TIETextLayer *txtlayer;
  txtlayer = dynamic_cast<TIETextLayer*>(ImageEnView1->CurrentLayer);
  if (txtlayer != NULL)
    txtlayer->Text = "This is a test text message";

  ImageEnView1->Update();
}

https://docwiki.embarcadero.com/RADStudio/Sydney/en/Dynamic_cast_(C%2B%2B_Type_Cast_Operator)
https://docwiki.embarcadero.com/RADStudio/Sydney/en/Static_cast(typecast_Operator)

Nigel
Xequte Software
www.imageen.com

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