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PODynamic Component creation Delphi7
 

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  1. PODynamic Component creation Delphi7
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    <p>I have to create Editboxes dynamically, which I am creating using loop (loop variable j). 5 components are created successfully, but in 6th component, array shows nil (in debugging process), i.e. nothing was created actually. Again 7th and 8th components are created successfully but 9th doesn't. I have declared variables like- </p> <pre><code> sud,eud,fud,a,e,c,d,na,st1,st2,citye,statee,pinne,cn,cr,cb,ca: array [0..9] of TEdit; crr,vcl: array [0..9] of TEdit; </code></pre> <p>All other components which I declared above are created successfully in that loop.</p> <pre><code> crr[j+3]:=tEdit.Create(coregroup[i]); crr[j+3].Parent:=coregroup[i]; crr[j+3].Top:= 77; crr[j+3].Left:=83+(j*57); crr[j+3].Width:=17; </code></pre> <p>I am in the same situation with the code for last two days. If more clarification is required, I may provide you.</p> <p>The actual code is-</p> <pre><code>sud,eud,fud,a,e,c,d,na,st1,st2,citye,statee,pinne,cn,cr,cb,ca: array [0..9] of TEdit; crr,vcl: array [0..9] of TEdit; dud,leud,lfud,b,f,g,h,nal,st1l,st2l,cityel,stateel,pinnel,dt,cl,crl,cbl,cal,vce: array [0..9] of TLabel; count,ppointer:integer; rcaldt: array[0..5] of TDateTimePicker; coregroup:array of TGroupBox; var i,j,kk,aa,x:integer; divv:array[0..3] of Tlabel; u,m,k:integer; begin k:=0; m:=0; //kk:=groupbox11.ControlCount-1; SetLength(coregroup,5); for i:=0 to count-1 do begin coregroup[i]:= tGroupbox.Create(groupbox11); coregroup[i].Parent:=groupbox11; coregroup[i].SetBounds(8+(i*223),140,x,170); if ctvt.ItemIndex=0 then coregroup[i].Caption:='C T'+ IntToStr((aa*i)+1) else coregroup[i].Caption:='V T'+ IntToStr((aa*i)+1); cl[0]:= tLabel.Create(coregroup[i]); cl[0].Parent:=coregroup[i]; cl[0].Top:= 20; cl[0].Left:=8; cl[0].Caption:= 'CORE'; cl[0].Font.Style := cl[0].Font.Style + [fsBold]; cbl[0]:= tLabel.Create(coregroup[i]); cbl[0].Parent:=coregroup[i]; cbl[0].Top:= 50; cbl[0].Left:=8; cbl[0].Caption:= 'BURDEN'; cbl[0].Font.Style := cbl[0].Font.Style + [fsBold]; crl[0]:= tLabel.Create(coregroup[i]); crl[0].Parent:=coregroup[i]; crl[0].Top:= 80; crl[0].Left:=8; crl[0].Caption:= 'RATIO'; crl[0].Font.Style := crl[0].Font.Style + [fsBold]; cal[0]:= tLabel.Create(coregroup[i]); cal[0].Parent:=coregroup[i]; cal[0].Top:= 110; cal[0].Left:=8; cal[0].Caption:= 'ACLASS'; //cr,cb,ca cal[0].Font.Style := cal[0].Font.Style + [fsBold]; vce[0]:= tLabel.Create(coregroup[i]); vce[0].Parent:=coregroup[i]; vce[0].Top:= 140; vce[0].Left:=8; vce[0].Caption:= 'VCLASS'; //cr,cb,ca vce[0].Font.Style := cal[0].Font.Style + [fsBold]; for j:=0 to ((StrToInt(ncorct.Text))-1) do begin if cn[j]=nil then begin cn[j]:=tEdit.Create(coregroup[i]); cn[j].Parent:=coregroup[i]; cn[j].Top:= 17; cn[j].Left:=52+(j*57); cn[j].Width:=50; cb[j]:=tEdit.Create(coregroup[i]); cb[j].Parent:=coregroup[i]; cb[j].Top:= 47; cb[j].Left:=71+(j*57); cb[j].Width:=30; cr[j]:=tEdit.Create(coregroup[i]); cr[j].Parent:=coregroup[i]; cr[j].Top:= 77; cr[j].Left:=56+(j*57); cr[j].Width:=17; ca[j]:=tEdit.Create(coregroup[i]); ca[j].Parent:=coregroup[i]; ca[j].Top:= 107; ca[j].Left:=61+(j*60); ca[j].Width:=35; divv[j]:=tLabel.Create(coregroup[i]); divv[j].Parent:=coregroup[i] ; divv[j].Top:=80; divv[j].Left:=74+(j*57); divv[j].Caption:='/'; crr[j]:=tEdit.Create(coregroup[i]); crr[j].Parent:=coregroup[i]; crr[j].Top:= 77; crr[j].Left:=83+(j*57); crr[j].Width:=17; vcl[j]:=tEdit.Create(coregroup[i]); vcl[j].Parent:=coregroup[i]; vcl[j].Top:= 137; vcl[j].Left:=61+(j*60); vcl[j].Width:=35; end else if cn[j+3]=nil then begin cn[j+3]:=tEdit.Create(coregroup[i]); cn[j+3].Parent:=coregroup[i]; cn[j+3].Top:= 17; cn[j+3].Left:=52+(j*57); cn[j+3].Width:=50; cb[j+3]:=tEdit.Create(coregroup[i]); cb[j+3].Parent:=coregroup[i]; cb[j+3].Top:= 47; cb[j+3].Left:=71+(j*57); cb[j+3].Width:=30; cr[j+3]:=tEdit.Create(coregroup[i]); cr[j+3].Parent:=coregroup[i]; cr[j+3].Top:= 77; cr[j+3].Left:=56+(j*57); cr[j+3].Width:=17; ca[j+3]:=tEdit.Create(coregroup[i]); ca[j+3].Parent:=coregroup[i]; ca[j+3].Top:= 107; ca[j+3].Left:=61+(j*60); ca[j+3].Width:=35; divv[j+3]:=tLabel.Create(coregroup[i]); divv[j+3].Parent:=coregroup[i] ; divv[j+3].Top:=80; divv[j+3].Left:=74+(j*57); divv[j+3].Caption:='/'; ***crr[j+3]:=tEdit.Create(coregroup[i]); crr[j+3].Parent:=coregroup[i]; crr[j+3].Top:= 77; crr[j+3].Left:=83+(j*57); crr[j+3].Width:=17;*** vcl[j+3]:=tEdit.Create(coregroup[i]); vcl[j+3].Parent:=coregroup[i]; vcl[j+3].Top:= 137; vcl[j+3].Left:=61+(j*60); vcl[j+3].Width:=35; end else begin cn[j+6]:=tEdit.Create(coregroup[i]); cn[j+6].Parent:=coregroup[i]; cn[j+6].Top:= 17; cn[j+6].Left:=52+(j*57); cn[j+6].Width:=50; cb[j+6]:=tEdit.Create(coregroup[i]); cb[j+6].Parent:=coregroup[i]; cb[j+6].Top:= 47; cb[j+6].Left:=71+(j*57); cb[j+6].Width:=30; cr[j+6]:=tEdit.Create(coregroup[i]); cr[j+6].Parent:=coregroup[i]; cr[j+6].Top:= 77; cr[j+6].Left:=56+(j*57); cr[j+6].Width:=17; ca[j+6]:=tEdit.Create(coregroup[i]); ca[j+6].Parent:=coregroup[i]; ca[j+6].Top:= 107; ca[j+6].Left:=61+(j*60); ca[j+6].Width:=35; divv[j+3]:=tLabel.Create(coregroup[i]); divv[j+3].Parent:=coregroup[i] ; divv[j+3].Top:=80; divv[j+3].Left:=74+(j*57); divv[j+3].Caption:='/'; crr[j+6]:=tEdit.Create(coregroup[i]); crr[j+6].Parent:=coregroup[i]; crr[j+6].Top:= 77; crr[j+6].Left:=83+(j*57); crr[j+6].Width:=17; vcl[j+6]:=tEdit.Create(coregroup[i]); vcl[j+6].Parent:=coregroup[i]; vcl[j+6].Top:= 137; vcl[j+6].Left:=61+(j*60); vcl[j+6].Width:=35; end; end; end; end else begin one.Enabled:=false; onem.Enabled:=false; end; end; </code></pre>
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    1. PTQuestion
    1. USPrateek Shukla
    1. USPrateek Shukla
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
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      1. PODynamic Component creation Delphi7
      1. USPrateek Shukla
      1. VTBountyStart
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      1. This table or related slice is empty.
      1. VTUpMod
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      1. This table or related slice is empty.
      1. VTUpMod
    1. COWhat is coregroup, and where does it come from? And can you show the loops that define i and j?
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      1. PODynamic Component creation Delphi7
      1. USMillie Smith
    2. COYou should show your code.
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      1. PODynamic Component creation Delphi7
      1. USvalex
    3. COPlease show the actual loop.
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      1. PODynamic Component creation Delphi7
      1. USRemy Lebeau
 

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