Loading Gui Objects

radez · 12-06-2009 05:09 PM

Hi,

In the modified Loading Gui Objects tutorial, I added combobox loaded from file.When i use

Code:

ComboBox *combo;

...

D.text ( 0, 0.9,S+"combo element: "+combo() ); // draw selected element

complier generate error: " term does not evaluate to a function taking 0 arguments". That work well when combo isn't pointer but i want to use gui editor, not create gui by code. How to deal with it?

jordicat · 12-06-2009 05:57 PM

Hi radez,
D.text ( 0, 0.9,S+"combo element: "+combo() );

I suppose that S ia a string. combo is a pointer to object gui ComboBox, so you are trying to create a string with a pointer S+string+pointer to object that is not a string, so there is a syntax mistake. The expresion combo() is not a string and it must be a string.

radez · 12-06-2009 06:32 PM

the problem is that i can't run combo() if it is pointer; for example

Code:

int x;

ComboBox combo;

 Gui+=combo.create(Rect_C(0.5,0,0.4,0.08))

...

x=combo(); //return index of selected element (int value)

this work well

Code:

int x;

ComboBox *combo; //pointer

 if(gui_objs.load("edytor.gobj"))

   {

Gui+=gui_objs; 

combo=gui_objs.getComboBox("combo");

}

x=combo();

this not work, generate error:"error C2064: term does not evaluate to a function taking 0 arguments"

jordicat · 12-06-2009 08:52 PM

if you wrote x=combo(), the compiler understand that you want to execute a function named combo, but combo is a pointer to a object ComboBox. Yet, I am not an expert of esenthel gui, but this is syntax error in C++ context.
Try to write this, for the compiler is the same than the first version:
x = (*combo)();

radez · 12-06-2009 09:46 PM

Thx that work. I tried *combo() but not (*combo)() i'm not often write in C/C++, it was simple mistake :(

Loading Gui Objects
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