LazBarcodes: Create qrcode in qrclock demo at runtime.

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@8357 8e941d3f-bd1b-0410-a28a-d453659cc2b4

components/lazbarcodes/examples/qrclock/main.lfm

@@ -3,23 +3,9 @@ object MainForm: TMainForm
   Height = 260
   Top = 130
   Width = 260
-  AutoSize = True
   BorderStyle = bsDialog
   Caption = 'QRClock'
-  ClientHeight = 260
-  ClientWidth = 260
   OnCreate = FormCreate
-  object BarcodeQR: TBarcodeQR
-    Left = 0
-    Height = 260
-    Top = 0
-    Width = 260
-    ParentColor = False
-    Text = 'TBarcodeQR'
-    Scale = 12
-    AutoSize = True
-    RecommendedSymbolSize = False
-  end
   object Timer: TTimer
     Interval = 250
     OnTimer = TimerTimer

components/lazbarcodes/examples/qrclock/main.pas

@@ -12,11 +12,12 @@ type
   { TMainForm }
 
   TMainForm = class(TForm)
-    BarcodeQR: TBarcodeQR;
     Timer: TTimer;
     procedure FormCreate(Sender: TObject);
     procedure TimerTimer(Sender: TObject);
   private
+    BarcodeQR: TBarcodeQR;
+    function GetNowText: String;
 
   public
 
@@ -32,15 +33,9 @@ implementation
 { TMainForm }
 
 procedure TMainForm.TimerTimer(Sender: TObject);
-var
-  dt: TDateTime;
-  sd, st: String;
 begin           
-  dt := Now();
-  sd := FormatDateTime('dddddd', dt);
-  st := FormatDateTime('hh:nn:ss', dt);
-  Caption := 'QRClock: ' + sd + ' - ' + st;
-  BarcodeQR.Text := sd + LineEnding + st;
+  BarcodeQR.Text := GetNowText;
+  Caption := 'QRClock: ' + StringReplace(BarcodeQR.Text, LineEnding, ' - ', []);
 end;
 
 procedure TMainForm.FormCreate(Sender: TObject);
@@ -48,11 +43,25 @@ var
   w: Integer = 0;
   h: Integer = 0;
 begin
-  // Avoid switching to final form size while form is already visible
-  TimerTimer(nil);
+  BarcodeQR := TBarcodeQR.Create(self);
+  BarcodeQR.Parent := self;
+  BarcodeQR.Scale := 16;
+  BarcodeQR.Text := GetNowText;
   BarcodeQR.GetPreferredSize(w, h);
-  Width := w;
-  Height := h;
+  BarcodeQR.SetBounds(0, 0, w, h);
+  ClientWidth := w;
+  ClientHeight := h;
+end;
+
+function TMainForm.GetNowText: String;
+var
+  dt: TDateTime;
+  sd, st: String;
+begin           
+  dt := Now();
+  sd := FormatDateTime('dddddd', dt);
+  st := FormatDateTime('hh:nn:ss', dt);
+  Result := sd + LineEnding + st;
 end;
 
 end.

components/lazbarcodes/examples/qrclock/qrclock.lpi

@@ -44,6 +44,7 @@
         <Filename Value="main.pas"/>
         <IsPartOfProject Value="True"/>
         <ComponentName Value="MainForm"/>
+        <HasResources Value="True"/>
         <ResourceBaseClass Value="Form"/>
       </Unit1>
     </Units>