Files moved, build.bat script, error message, info about generating in progress

.gitignore

@@ -1,4 +1,5 @@
 *.o
 *.ppu
 *.exe
-*.out
+*.out
+*.pdf

build.bat

@@ -1,5 +1,11 @@
+rm generator.exe
+rm gui.exe
+
+cd src
 fpc main.pas
+mv main.exe ../generator.exe
 cd gui
 fpc gui.pas
+mv gui.exe ../../gui.exe
 
 pause

src/gui/gui.pas

@@ -17,12 +17,13 @@ type
   
   PGeneratorWindow = ^TGeneratorWindow;
   TGeneratorWindow = object(TDialog)
+    pGeneratingBtn: PButton;
     winRect: TRect;
     curY: integer;
   
     constructor Init;
     procedure addField(caption: string; maxLength: integer);
-    procedure addButton(caption: string; command: integer);
+    function addButton(caption: string; command: integer): PButton;
   end;
   
   TMSApp = object(TApplication)
@@ -51,8 +52,9 @@ begin
   GeneratorWindow^.GetData(GenerateData);
   startTime := getTimestamp();
   
+  GeneratorWindow^.pGeneratingBtn^.show();
   with GenerateData do begin
-    success := RunCommand('../main', [
+    success := RunCommand('./generator', [
       width,
       height,
       power,
@@ -62,9 +64,17 @@ begin
       path
     ], s);
   end;
+  GeneratorWindow^.pGeneratingBtn^.hide();
   
   if (success) then begin
     ShowSuccess(s, (getTimestamp() - startTime) / 1000);
+  end else begin
+      MessageBox(
+        #3'Error'#13 +
+        #3'Unable to execute generator!'#13,
+        nil, 
+        mfInformation or mfOkButton
+      );
   end;
 end;
 
@@ -84,30 +94,34 @@ begin
   curY := curY + 2;
 end;
 
-procedure TGeneratorWindow.addButton(caption: string; command: integer);
+function TGeneratorWindow.addButton(caption: string; command: integer): PButton;
 var
   r: TRect;
+  pbtn: PButton;
 begin
   r.assign(3, curY, winRect.b.x - 1, curY + 1);
-  Insert(New(PButton, Init(r, caption, command, bfNormal)));
+  pbtn := New(PButton, Init(r, caption, command, bfNormal));
+  Insert(pbtn);
   
   curY := curY + 2;
+  
+  addButton := pbtn;
 end;
   
 constructor TGeneratorWindow.Init();
 var
-  wr: TRect;
+  r: TRect;
 begin
-  wr.assign(0, 0, 60, 19);
-  inherited Init(wr, 'Mandelbrot generator');
+  r.assign(0, 0, 60, 19);
+  inherited Init(r, 'Mandelbrot generator');
   Options := Options or ofCentered;
   HelpCtx := $F000;
   
-  winRect := wr;
+  winRect := r;
   curY := 2;
   
   with GenerateData do begin
-    path := '../generated_images';
+    path := './generated_images';
     width := '512';
     height := '512';
     power := '2';
@@ -125,6 +139,9 @@ begin
   addField('Center Y:', 64);
   
   addButton('Generate', cmGenerate);
+  curY := curY - 2;
+  pGeneratingBtn := addButton('Generating...', 0);
+  pGeneratingBtn^.hide();
 end;
   
 procedure TMSApp.NewWindow();