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Help with function
Can you help me with this function:

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function# hDlg message wParam lParam
if(hDlg) goto messages

This function allows to execute code whenever some event
(dialog created, button clicked, etc) occurs in dialog.
The code must follow appropriate case statements.
To add case statements for various messages (events), you
can use the Events button in the Dialog Editor. Read more in Help.

0 "" 0x10CA0A44 0x110 0 0 419 287 "Comparar"
1 Button 0x54030001 0x4 160 268 48 14 "OK"
2 Button 0x54030000 0x4 212 268 48 14 "Cancel"
3 Edit 0x543310C4 0x204 4 10 204 198 ""
4 Edit 0x543310C4 0x204 212 10 204 198 ""
5 Button 0x54013003 0x4 186 228 50 18 "Solo diferencias"
6 Edit 0x54030081 0x204 162 248 96 14 ""
DIALOG EDITOR: "" 0x2010601 "" ""

sel message
    case WM_DROPFILES TO_DropFiles hDlg wParam
    str tex1.getwintext(id(3 "Comparar"))
        str tex11.getfile(tex1)
        tex11.setwintext(id(3 "Comparar"))
    str tex2.getwintext(id(4 "Comparar"))
        str tex22.getfile(tex2)
        tex22.setwintext(id(4 "Comparar"))
    str+ texto1.getwintext(id(3 "Comparar"))
    str+ texto2.getwintext(id(4 "Comparar"))
    if(texto1=texto2) _s="IDÉNTICOS"
    else _s="DIFERENTES"
    _s.setwintext(id(6 "Comparar"))
    case WM_INITDIALOG DT_Init(hDlg lParam); ret 1
    case WM_DESTROY DT_DeleteData(hDlg)
    case WM_COMMAND goto messages2
int ctrlid=wParam&0xFFFF; message=wParam>>16
sel wParam
    case 5
    if(but(id(5 "Comparar")))
        str tt1,tt2
        int i
            for i 0 (numlines(texto1)-numlines(texto2))
            for i 0 (numlines(texto2)-numlines(texto1))
        ARRAY(str) t1=texto1
        ARRAY(str) t2=texto2
            for i 0 t1.len
                if(t1[i]<>t2[i]) tt1.formata("%s[]" t1[i]); tt2.formata("%s[]" t2[i])
        tt1.setwintext(id(3 "Comparar"))
        tt2.setwintext(id(4 "Comparar"))
        texto1.setwintext(id(3 "Comparar"))
        texto2.setwintext(id(4 "Comparar"))

    case IDOK DT_Ok hDlg
    case IDCANCEL DT_Cancel hDlg
ret 1

- I am looking for: scroll Edit3=Edit4; highlighting differences or other method...
I would rather download a specialized program.

This code highlights the first difference. You should also set ES_NOHIDESEL style for both Edit controls.

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sel wParam
,case 5
,int h1=id(3 hDlg)
,int h2=id(4 hDlg)
,int i
,int minlen=iif(texto1.len<texto2.len texto1.len texto2.len)
,for i 0 minlen
,,,SetFocus h1
,,,SendMessage h1 EM_SETSEL i i+1
,,,SendMessage h1 EM_SCROLLCARET 0 0
,,,SetFocus h2
,,,SendMessage h2 EM_SETSEL i i+1
,,,SendMessage h2 EM_SCROLLCARET 0 0

,case IDOK DT_Ok hDlg
,case IDCANCEL DT_Cancel hDlg
ret 1

and for the scroll of edit3 and edit4 are synchronous?

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