Bonjours
Voici un code qui permet de bouger un Timage et de repositionner les ScrollBars de la Form.
Sur la Form Un TButton (juste pour visualiser au cour des deplacement) un TPanel sur lequel est pose un TImage
Le . h
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//---------------------------------------------------------------------------
#ifndef Unit1H
#define Unit1H
//---------------------------------------------------------------------------
#include <Classes.hpp>
#include <Controls.hpp>
#include <StdCtrls.hpp>
#include <Forms.hpp>
#include <ExtCtrls.hpp>
#include <Graphics.hpp>
//---------------------------------------------------------------------------
class TForm1 : public TForm
{
__published: // IDE-managed Components
     TButton *Button1;
     TPanel *Panel1;
     TImage *Image1;
     void __fastcall Image1MouseDown(TObject *Sender, TMouseButton Button,
          TShiftState Shift, int X, int Y);
     void __fastcall Image1MouseMove(TObject *Sender, TShiftState Shift,
          int X, int Y);
     void __fastcall Image1MouseUp(TObject *Sender, TMouseButton Button,
          TShiftState Shift, int X, int Y);
private: // User declarations
       bool Deplacement;
       int XPos, YPos;
public:  // User declarations
     __fastcall TForm1(TComponent* Owner);
};
//---------------------------------------------------------------------------
extern PACKAGE TForm1 *Form1;
//---------------------------------------------------------------------------
#endif
Le .cpp
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//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
TCursor Save_Cursor;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
     : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Image1MouseDown(TObject *Sender,
      TMouseButton Button, TShiftState Shift, int X, int Y)
{
Save_Cursor = Screen->Cursor;
Screen->Cursor = crSizeAll;
      XPos = X;
      YPos = Y;
      if (Button == mbLeft) Deplacement = true;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Image1MouseMove(TObject *Sender, TShiftState Shift,
      int X, int Y)
{
      if ( Deplacement == true )
     {
     HorzScrollBar->Position += XPos - X;
     VertScrollBar->Position += YPos - Y;
     }
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Image1MouseUp(TObject *Sender, TMouseButton Button,
      TShiftState Shift, int X, int Y)
{
Screen->Cursor = Save_Cursor;
Deplacement = false;
}
//---------------------------------------------------------------------------