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| unit Unit1;
interface
uses
System.SysUtils, System.Types, System.UITypes, System.Classes,
System.Variants,
FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs,
FMX.Controls.Presentation, FMX.StdCtrls,
{added}
FMX.Objects, FMX.Styles.Objects;
type
TForm1 = class(TForm)
StyleBook1: TStyleBook;
Button1: TButton;
ProgressBar1: TProgressBar;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
procedure SetProgressbarColor(aProgressBar: TProgressBar;
aColor: TAlphaColor);
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.fmx}
procedure TForm1.Button1Click(Sender: TObject);
var
i: integer;
begin
with ProgressBar1 do
begin
Min := 0;
Max := 10000;
Value := 0;
SetProgressbarColor(ProgressBar1, TAlphaColors.Null);
for i := 0 to 5000 do
Value := i;
showmessage('');
SetProgressbarColor(ProgressBar1, TAlphaColors.Red);
for i := 5001 to 10000 do
Value := i;
end;
end;
procedure TForm1.SetProgressbarColor(aProgressBar: TProgressBar;
aColor: TAlphaColor);
var
T: TFmxObject;
NativeColor: TAlphaColor;
begin
{$IFDEF LINUX}
NativeColor := TAlphaColors.Coral;
{$ELSE}
NativeColor := TAlphaColors.Null;
{$ENDIF}
if aProgressBar = nil then
Exit;
T := aProgressBar.FindStyleResource('FillColorBar');
if (T <> nil) and (T is TRectangle) then
begin
if TRectangle(T).Fill <> nil then
begin
if aColor <> TAlphaColors.Null then
TRectangle(T).Fill.Color := aColor
else
TRectangle(T).Fill.Color := NativeColor;
end;
end;
aProgressBar.Repaint;
end;
end. |
Changer la couleur de la barre d'un ProgressBar
Répondre avec citation
) avec Qt.
il y a là une subtilité que je ne pige pas ! 
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