[SOLVED] [2.0]using dialog in class issue

[cinetec_tech]

hi:

   I'm trying to open a dialog in my class to let user select a material. but i found using a dialog will cause the instance break some how.

it can be reproducible with the unigine sample file ui_00.cpp after modified as attachment.

 to reproduce:

1: place the attached in your 2.0 sample widgets folder to replace the old one.

2: open the world and click any button. 

you will see the error in console. it basically render all vector type unusable.

I need to know if this is a incorrect use? or workaround ? a bug fix for it? ASAP

 

thanks 

 

 

ui_00.cpp

[azagniy]

Hi. The "dialogMaterial" function uses a specific wait construct. The "wait" construct is valid when called from a simple function (rather then the member function of the class). In the "ui_00.cpp" sample Window class has a simple function called "callback_redirector". You can use this function to show material dialog and send result as parameter to the "clicked" function:

// clicked callback
void clicked(string mat_name) {
	Material material = engine.materials.findMaterial(mat_name);
	int total = materials.size();
	engine.message("mat = %s, total = %i\n",typeinfo(material),total);
}
// callback redirector
void callback_redirector(string func,Window window) {
	string mat_name = "";
	if(dialogMaterial(TR("Select material"),mat_name)) {
		window.call(func,mat_name);
	}
}

[cinetec_tech]

hi yingaz:
   thanks , that works for me. any reason why can't call "wait" from a class? is it fixable?

[azagniy]

Hi, Wait construct can't work with classes methods because only address of the function placed into a list of waiting functions and this list don't know about class instance.

[cinetec_tech]

Hi, Wait construct can't work with classes methods because only address of the function placed into a list of waiting functions and this list don't know about class instance.

hi yingaz:

    I found not use ”Wait“ stil doesn't help. basically all dialog windows has to be called from the redirector function. this is kind of huge limitation.example: if we want user to confirm a Yes or No dialog in the middle to overwrite something...

    Hope this could be fixed.

[unclebob]

Hi there!

 

Let me bring some happiness and enlightenment to this topic! Wait construct will only work in script "threads" (not real ones) and in ui callbacks which are the same "threads" basically.

 

First of all, I assume you have that case (feel free to correct me):

int update() {
    if(something is happened) very_important_processing_func(data);
    
    return 1;
}

int very_important_processing_func(some data) {
    do_step_1(some data);
    do_step_2(some more data);
    if(dialogMessageYesNo("Are you sure?")) { // here goes the problem
        do_very_important_step_3(very cool data);
    }
    return 1;
}

Which could be rewritten to "thread-like" form:

int update() {
    if(something is happened) thread(functionid(very_important_processing_func),data);
    
    return 1;
}

int very_important_processing_func(some data) {
    do_step_1(some data);
    do_step_2(some more data);
    if(dialogMessageYesNo("Are you sure?")) { // no problem here because we're inside script "thread" now
        do_very_important_step_3(very cool data);
    }
    return 1;
}

See? Not a big deal!

[cinetec_tech]

thanks Bob!

will try your solution.