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How to move a TImage on a scrollbox Turn on/off line numbers in source code. Switch to Orginial background IDE or DSP color Comment or reply to this aritlce/tip for discussion. Bookmark this article to my favorite article(s). Print this article
Move a TImage on a scrollbox 09-Sep-04
Category
VCL-General
Language
CBuilder All Versions
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377
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Publisher:
Darley, F. Joe
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			1   
2   //---------------------------------------------------------------------------
3   
4   #include <vcl.h>
5   #pragma hdrstop
6   
7   #include "Unit1.h"
8   //---------------------------------------------------------------------------
9   #pragma package(smart_init)
10  #pragma resource "*.dfm"
11  TForm1 *Form1;
12  TPoint FLastDown;
13  //---------------------------------------------------------------------------
14  __fastcall TForm1::TForm1(TComponent* Owner)
15          : TForm(Owner)
16  {
17  }
18  //---------------------------------------------------------------------------
19  
20  void __fastcall TForm1::Image1MouseDown(TObject *Sender,
21        TMouseButton Button, TShiftState Shift, int X, int Y)
22  {
23  GetCursorPos(&FLastDown);
24  }
25  //---------------------------------------------------------------------------
26  void __fastcall TForm1::Image1MouseUp(TObject *Sender, TMouseButton Button,
27        TShiftState Shift, int X, int Y)
28  {
29   FLastDown = Point(-1, -1);
30  }
31  //---------------------------------------------------------------------------
32  void __fastcall TForm1::Image1MouseMove(TObject *Sender, TShiftState Shift,
33        int X, int Y)
34  {
35   TPoint pt;
36  
37    if (Shift.Contains(ssLeft) && (FLastDown.x >= 0)){
38  
39      GetCursorPos(&pt);
40      ScrollBox1->VertScrollBar->Position = ScrollBox1->VertScrollBar->Position + 
41  FLastDown.y - pt.y;
42      ScrollBox1->HorzScrollBar->Position = ScrollBox1->HorzScrollBar->Position + 
43  FLastDown.x - pt.x;
44      FLastDown = pt;
45     }
46  
47  }
48  //---------------------------------------------------------------------------


			
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