Demos: fixed compiler warnings.

* fixed deprecated functions
* fixed unused variables
* fixed unused units
* fixed not initialised variables
* fixed nested comments

8 files changed, 29 insertions, 23 deletions

diff --git a/examples/gui/colorwheel/frm_main.pas b/examples/gui/colorwheel/frm_main.pas
index 63518360..3633b740 100644
--- a/examples/gui/colorwheel/frm_main.pas
+++ b/examples/gui/colorwheel/frm_main.pas
@@ -67,14 +67,14 @@ end;
 
 procedure TMainForm.RGBChanged(Sender: TObject);
 var
-  rgb: TFPColor;
+  rgb: TRGBTriple;
   c: TfpgColor;
 begin
   FViaRGB := True;  // revent recursive updates
   rgb.Red := StrToInt(edR.Text);
   rgb.Green := StrToInt(edG.Text);
   rgb.Blue := StrToInt(edB.Text);
-  c := FPColorTofpgColor(rgb);
+  c := RGBTripleTofpgColor(rgb);
   ColorWheel1.SetSelectedColor(c);  // This will trigger ColorWheel and ValueBar OnChange event
   FViaRGB := False;
 end;
@@ -122,11 +122,11 @@ end;
 
 procedure TMainForm.UpdateRGBComponents;
 var
-  rgb: TFPColor;
+  rgb: TRGBTriple;
   c: TfpgColor;
 begin
   c := ValueBar1.SelectedColor;
-  rgb := fpgColorToFPColor(c);
+  rgb := fpgColorToRGBTriple(c);
   edR.Text := IntToStr(rgb.Red);
   edG.Text := IntToStr(rgb.Green);
   edB.Text := IntToStr(rgb.Blue);
diff --git a/examples/gui/combobox/frm_main.pas b/examples/gui/combobox/frm_main.pas
index e1a293df..6471963d 100644
--- a/examples/gui/combobox/frm_main.pas
+++ b/examples/gui/combobox/frm_main.pas
@@ -5,12 +5,18 @@ unit frm_main;
 interface
 
 uses
-  SysUtils, Classes, fpg_base, fpg_main, fpg_edit,
-  fpg_widget, fpg_form, fpg_label, fpg_button,
-  fpg_listbox, fpg_memo, fpg_combobox, fpg_basegrid, fpg_grid,
-  fpg_dialogs, fpg_checkbox, fpg_tree, fpg_trackbar,
-  fpg_progressbar, fpg_radiobutton, fpg_tab, fpg_menu,
-  fpg_panel, fpg_popupcalendar, fpg_gauge, fpg_editcombo;
+  SysUtils,
+  Classes,
+  fpg_base,
+  fpg_main,
+  fpg_form,
+  fpg_label,
+  fpg_button,
+  fpg_combobox,
+  fpg_checkbox,
+  fpg_radiobutton,
+  fpg_panel,
+  fpg_editcombo;
 
 type
 
diff --git a/examples/gui/customstyles/mystyle.pas b/examples/gui/customstyles/mystyle.pas
index 665a22b0..8ca00d33 100644
--- a/examples/gui/customstyles/mystyle.pas
+++ b/examples/gui/customstyles/mystyle.pas
@@ -1,4 +1,4 @@
-{
+(*
   A very quick and basic style implementation. It took all of 10 minutes.
   To apply this style, follow these instructions:
 
@@ -31,7 +31,7 @@
       end;
     end;
 
-}
+*)
 unit mystyle;
 
 {$mode objfpc}{$H+}
diff --git a/examples/gui/drag_n_drop/dndexample.lpr b/examples/gui/drag_n_drop/dndexample.lpr
index 13dda563..c95b97d0 100644
--- a/examples/gui/drag_n_drop/dndexample.lpr
+++ b/examples/gui/drag_n_drop/dndexample.lpr
@@ -81,7 +81,6 @@ procedure TMainForm.Bevel1DragEnter(Sender, Source: TObject;
   AMimeList: TStringList; var AMimeChoice: TfpgString;
   var ADropAction: TfpgDropAction; var Accept: Boolean);
 var
-  i: integer;
   s: string;
 begin
   { the mime type we want to accept }
@@ -108,7 +107,6 @@ procedure TMainForm.PanelDragDrop(Sender, Source: TObject; X, Y: integer;
   AData: Variant);
 var
   s: string;
-  v: variant;
 begin
   s := AData;
   Bevel1.Text := Format('Drop event at (%d,%d) with value(s):'+LineEnding+'%s', [X, Y, s]);
@@ -129,7 +127,6 @@ procedure TMainForm.LabelDragStartDetected(Sender: TObject);
 var
   m: TfpgMimeData;
   d: TfpgDrag;
-  v: variant;
 begin
   m := TfpgMimeData.Create;
 
diff --git a/examples/gui/embedded_form/frm_main.pas b/examples/gui/embedded_form/frm_main.pas
index 785247c9..e2fb0f0e 100644
--- a/examples/gui/embedded_form/frm_main.pas
+++ b/examples/gui/embedded_form/frm_main.pas
@@ -56,6 +56,7 @@ var
   var
     j: integer;
   begin
+    Result := '';
     if indent = 0 then
       exit;
     for j := 1 to indent do
diff --git a/examples/gui/filedialog/filedialog.lpr b/examples/gui/filedialog/filedialog.lpr
index e1dca3d7..315b7885 100644
--- a/examples/gui/filedialog/filedialog.lpr
+++ b/examples/gui/filedialog/filedialog.lpr
@@ -105,6 +105,7 @@ procedure TMainForm.btnUserInputClicked(Sender: TObject);
 var
   lAnswer: TfpgString;
 begin
+  lAnswer := '';
   if fpgInputQuery('Caption here', 'And the prompt goes here', lAnswer) then
     ShowMessage(Format('User entered <%s>', [lAnswer]));
 end;
diff --git a/examples/gui/listbox/frm_main.pas b/examples/gui/listbox/frm_main.pas
index 1c858112..cacc604f 100644
--- a/examples/gui/listbox/frm_main.pas
+++ b/examples/gui/listbox/frm_main.pas
@@ -5,13 +5,15 @@ unit frm_main;
 interface
 
 uses
-  SysUtils, Classes,
-  fpg_base, fpg_main, fpg_edit,
-  fpg_widget, fpg_form, fpg_label, fpg_button,
-  fpg_listbox, fpg_memo, fpg_combobox, fpg_basegrid, fpg_grid,
-  fpg_dialogs, fpg_checkbox, fpg_tree, fpg_trackbar,
-  fpg_progressbar, fpg_radiobutton, fpg_tab, fpg_menu,
-  fpg_panel, fpg_popupcalendar, fpg_gauge;
+  SysUtils,
+  Classes,
+  fpg_base,
+  fpg_main,
+  fpg_form,
+  fpg_button,
+  fpg_listbox,
+  fpg_memo,
+  fpg_checkbox;
 
 type
 
diff --git a/examples/gui/splashscreen/frm_main.pas b/examples/gui/splashscreen/frm_main.pas
index 7ecf663c..61155fae 100644
--- a/examples/gui/splashscreen/frm_main.pas
+++ b/examples/gui/splashscreen/frm_main.pas
@@ -49,7 +49,6 @@ type
 implementation
 
 uses
-  fpg_command_intf,
   commands;
 
 {@VFD_NEWFORM_IMPL}