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zzd10h
[SOLVED] [Reaction] How to dynamically add Objects ?
Posted on: 2015/5/9 23:42    #1
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Hi,
I am trying to dynamically add objects to my Reaction Layout but without success.

I read http://www.os4coding.net/forum/create-buttons-loop but I certainly missed something (I'm even worst on Reaction than I'm on MUI and Qt )

I'm trying to dynamically add 3 buttons AFTER that the window is created
but it displays me only the 2 first fixed buttons

I tried too to DoMethod(win, WM_RETHINK); after the setAttrs(LAYOUT_AddChild)...


Resized Image


I cross-posted this question on OS4Coding too

Thank you, by advance, for your help
Guillaume

void make_window()
{
 win = NewObject(NULL, "window.class",         
        WINDOW_Position,       WPOS_CENTERSCREEN,
        WINDOW_Layout,         VLayoutObject,
 
 
         LAYOUT_AddChild,  OBJ(OBJ_BUT_GRP) = HGroupObject,
            LAYOUT_AddChild,  LayoutObject,
                LAYOUT_VertAlignment,  LALIGN_CENTER,
                LAYOUT_HorizAlignment, LALIGN_CENTER,
 
                LAYOUT_AddChild,  OBJ(OBJ_IBUT_1) = ButtonObject,
                    GA_ID,               OBJ_IBUT_1,
                    GA_RelVerify,        TRUE,                
                    BUTTON_BevelStyle,   BVS_NONE,
                    BUTTON_Transparent,  TRUE,
                    BUTTON_RenderImage,  OBJ(OBJ_SEL_1) = BitMapObject,
                        BITMAP_SourceFile,         "images/pdf",
                        BITMAP_DisabledSourceFile, "images/pdf_g",
                        BITMAP_Screen,             screen,
                        BITMAP_Masking,            TRUE,
                    BitMapEnd,
                    BUTTON_SelectImage,  OBJ(OBJ_UNSEL_1) = BitMapObject,
                        BITMAP_SourceFile,  "images/pdf_s",
                        BITMAP_Screen,      screen,
                        BITMAP_Masking,     TRUE,
                    BitMapEnd,
                ButtonEnd,
                LAYOUT_AddChild,  OBJ(OBJ_IBUT_2) = ButtonObject,
                    GA_ID,               OBJ_IBUT_2,
                    GA_RelVerify,        TRUE,                
                    BUTTON_BevelStyle,   BVS_NONE,
                    BUTTON_Transparent,  TRUE,
                    BUTTON_RenderImage,  OBJ(OBJ_SEL_2) = BitMapObject,
                        BITMAP_SourceFile,         "images/picture",
                        BITMAP_DisabledSourceFile, "images/picture_g",
                        BITMAP_Screen,             screen,
                        BITMAP_Masking,            TRUE,
                    BitMapEnd,
                    BUTTON_SelectImage,  OBJ(OBJ_UNSEL_2) = BitMapObject,
                        BITMAP_SourceFile,  "images/picture_s",
                        BITMAP_Screen,      screen,
                        BITMAP_Masking,     TRUE,
                    BitMapEnd,
                ButtonEnd,  
 
                LabelEnd,  
 
            LayoutEnd,
EndHGroup,
 
            CHILD_WeightedHeight, 0,
 
        End,   // VLayout
    WindowEnd;
 
int x = 0 ;
for(x = 0; x < 3; x++)
    {
        Objects[x] = NewObject(NULL, "button.gadget",
            GA_ID,x,
            GA_RelVerify, TRUE,
            GA_Text,"xxx",
            TAG_END);
 
        if (Objects[x] == NULL) 
        {
            DisposeObject(OBJ(OBJ_BUT_GRP));
            Objects[OBJ_BUT_GRP] = NULL;
            return ;
        }
        SetAttrs(OBJ(OBJ_BUT_GRP),
            LAYOUT_AddChild, Objects[x],
        TAG_END);
        printf("x %d \n",x);
    }
 
}


Edited by zzd10h on 2015/5/10 0:38:28
Edited by zzd10h on 2015/5/10 19:49:52
http://apps.amistore.net/zTools
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jabirulo
Re: [Reaction] How to dynamically add Objects ?
Posted on: 2015/5/10 10:46    #2
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@zzd10h

http://www.os4coding.net/forum/create-buttons-loop#comment-2277

Hope it helps (somehow)

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Chris
Re: [Reaction] How to dynamically add Objects ?
Posted on: 2015/5/10 11:15    #3
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@zzd10h

You should be using the method rather than the tag under OS4. ie.

IDoMethod(OBJ(OBJ_BUT_GRP), LM_ADDCHILD,
   window, Objects[x], NULL);


Then do:
FlushLayoutDomainCache(win);
RethinkLayout(win, window, NULL, TRUE);


Where "window" is the Intuition Window pointer you get back when you open the window (can't see it in your code). You may be able to pass NULL if you've not opened the window yet, not sure.
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zzd10h
Re: [Reaction] How to dynamically add Objects ?
Posted on: 2015/5/10 13:05    #4
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@Javier & Chris

Thank you very much,

IDoMethod(OBJ(OBJ_BUT_GRP), LM_ADDCHILD, window, OBJ(OBJ_BUT), NULL);
DoMethod(win, WM_RETHINK);

works well.

But it works only with fix name objects, not in a "for" loop with Objects[x].

Thank you again !
http://apps.amistore.net/zTools
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zzd10h
Re: [Reaction] How to dynamically add Objects ?
Posted on: 2015/5/10 19:49    #5
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Jabirulo fixed my problem.

He changed
WINDOW_Layout, VLayoutObject,
by
WINDOW_Layout, OBJ(OBJ_MAIN) = NewObject(NULL, "layout.gadget"

IDoMethod(OBJ(OBJ_MAIN), LM_ADDCHILD, window, OBJ(OBJ_BTN), NULL);

Thank you very much, Javier, very kind :)
http://apps.amistore.net/zTools
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Chris
Re: [Reaction] How to dynamically add Objects ?
Posted on: 2015/5/10 19:58    #6
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@zzd10h

Oh yes, my bad. I misread the source I was modifying and took what I changed to "win" to be the window object, when in fact it should have been the root layout object. I did wonder why it was originally cast to a struct Gadget *. Sorry for the confusion, glad you figured out the *ahem* delibrate mistake!
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zzd10h
Re: [Reaction] How to dynamically add Objects ?
Posted on: 2015/5/10 20:00    #7
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@Chris

Héhé, no problem, thank you nevertheless for your help

http://apps.amistore.net/zTools
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