Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 499
  • Last Modified:

Problem I have this error message List Out index of bounds (2)

Problem I have this error message List Out index of bounds (2)

I use this code and when I insert given there is this error with open the tabSheet3

  tabSheet := TTabSheet.Create(PageControl1) ;
  tabSheet.PageControl := PageControl1;
  tabSheet.Caption := 'Disque #'+IntToStr(PageControl1.PageCount);
  PageControl1.ActivePageIndex := tabSheet.TabIndex;
  PageControl1.Refresh;

  ListView := TListView.Create(tabSheet);
  ListView.Name := 'ListView'+IntToStr(PageControl1.PageCount);
  ListView.Parent := tabSheet;
  ListView.Align := alClient;
  ListView.ViewStyle := vsReport;
  ListView.Visible := true;
  ListView.Ctl3D := false;
  ListView.RowSelect := true;
  ListView.ReadOnly := true;
  ListView.MultiSelect := true;
  ListView.BevelInner := bvNone;
  ListView.BevelOuter := bvNone;
  ListView.Columns.Add.Caption := 'Name';
  ListView.Columns.Add.Caption := 'Size';
  ListView.Columns.Add.Caption := 'Type';
  ListView.Columns.Add.Caption := 'Path';
  ListView.Columns[0].Width := 125;
  ListView.Columns[1].Width := 115;
  ListView.Columns[2].Width := 185;
  ListView.Columns[3].Width := 485;
  ListView.Columns[0].Alignment := taLeftJustify;
  ListView.Columns[1].Alignment := taRightJustify;
  ListView.Columns[2].Alignment := taLeftJustify;
  ListView.Columns[3].Alignment := taLeftJustify;
  ListView.GridLines := true;
  ImageListHandle := SHGetFileInfo('C:\',0,FileInfo, SizeOf(FileInfo), SHGFI_SYSICONINDEX or SHGFI_SMALLICON);
  SendMessage(ListView.Handle, LVM_SETIMAGELIST, LVSIL_SMALL, ImageListHandle);
  ImageListHandle := SHGetFileInfo('C:\',0,FileInfo,SizeOf(FileInfo),SHGFI_SYSICONINDEX or SHGFI_LARGEICON);
  SendMessage(ListView.Handle, LVM_SETIMAGELIST, LVSIL_NORMAL, ImageListHandle);

  StatusBar := TStatusBar.Create(tabSheet);
  StatusBar.Name := 'Statusbar'+IntToStr(PageControl1.PageCount);
  StatusBar.Parent := tabSheet;
  StatusBar.Align := alBottom;
  StatusBar.Visible := true;
  StatusBar.Panels.Add.Width := 125;
  StatusBar.Panels.Add.Width := 125;
  StatusBar.Panels.Add.Width := 200;
  StatusBar.Panels.Items[0].Alignment := taCenter;
  StatusBar.Panels.Items[1].Alignment := taCenter;
  StatusBar.Panels.Items[2].Alignment := taLeftJustify;


Why?
0
ProgsX
Asked:
ProgsX
1 Solution
 
MerijnBSr. Software EngineerCommented:
on what line do you get the error?
0
 
mikelittlewoodCommented:
Restructure this first

var
  ListView: TListView;
  ListColumn: TListColumn;
begin
  ListView := TListView.Create( nil);

  with ListView do
  begin
    Name        := 'ListView'+IntToStr(PageControl1.PageCount);
    Parent      := TabSheet;
    Align       := alClient;
    Visible     := true;
    ViewStyle   := vsReport;
    Ctl3D       := false;
    RowSelect   := true;
    ReadOnly    := true;
    MultiSelect := true;
    BevelInner  := bvNone;
    BevelOuter  := bvNone;
    GridLines   := true;

    ListColumn          := ListView.Columns.Add;
    ListColumn.Caption  := 'Name';
    ListColumn.Width    := 125;
    ListColumn.Alignment:= taLeftJustify;

    ListColumn          := ListView.Columns.Add;
    ListColumn.Caption  := 'Size';
    ListColumn.Width    := 115;
    ListColumn.Alignment:= taRightJustify;

    ListColumn          := ListView.Columns.Add;
    ListColumn.Caption  := 'Type';
    ListColumn.Width    := 185;
    ListColumn.Alignment:= taLeftJustify;

    ListColumn          := ListView.Columns.Add;
    ListColumn.Caption  := 'Path';
    ListColumn.Width    := 485;
    ListColumn.Alignment:= taLeftJustify;
  end;
0
 
mikelittlewoodCommented:
Also this

var
  StatusPanel: TStatusPanel;
begin
  StatusBar := TStatusBar.Create( nil);
  with StatusBar do
  begin
    Name    := 'Statusbar'+IntToStr(PageControl1.PageCount);
    Parent  := tabSheet;
    Align   := alBottom;
    Visible := true;

    StatusPanel           := StatusBar.Panels.Add;
    StatusPanel.Width     := 125;
    StatusPanel.Alignment := taCenter;

    StatusPanel           := StatusBar.Panels.Add;
    StatusPanel.Width     := 125;
    StatusPanel.Alignment := taCenter;

    StatusPanel           := StatusBar.Panels.Add;
    StatusPanel.Width     := 200;
    StatusPanel.Alignment := taLeftJustify;
  end;
0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 
mikelittlewoodCommented:
Ok well I took out this code, as Im not sure what you are trying to do here, maybe set up an image list but this seems a very odd way to do it.

  ImageListHandle := SHGetFileInfo('C:\',0,FileInfo, SizeOf(FileInfo), SHGFI_SYSICONINDEX or SHGFI_SMALLICON);
  SendMessage(ListView.Handle, LVM_SETIMAGELIST, LVSIL_SMALL, ImageListHandle);
  ImageListHandle := SHGetFileInfo('C:\',0,FileInfo,SizeOf(FileInfo),SHGFI_SYSICONINDEX or SHGFI_LARGEICON);
  SendMessage(ListView.Handle, LVM_SETIMAGELIST, LVSIL_NORMAL, ImageListHandle);

Then I just ran the other code and it worked fine without any errors.
I made 20 tab sheets and no errors occured.

So Im guessing your problem is with the code I took out.
0
 
ProgsXAuthor Commented:
I always have the same problem.
0
 
TNameCommented:
ProgsX, your code works for me too (without images that is).  
The problem must be somewhere else. Is any event handler implemented for PageControl1 (e.g. OnChange?)
0
 
TheRealLokiSenior DeveloperCommented:
I'm guessing because you are doing
Name        := 'ListView'+IntToStr(PageControl1.PageCount);
and
StatusBar.Name := 'Statusbar'+IntToStr(PageControl1.PageCount);

later on, you are trying to access something based on those names.
I suspect you should be using
  +IntToStr(PageControl1.PageCount - 1);
or
  +IntToStr(tabSheet.TabIndex);
0
 
ProgsXAuthor Commented:
I found my error it is necessary that I create absolutely a loop

example:

  for i := 0 to PageControl1.ActivePage.ControlCount - 1 do
  begin
    if (PageControl1.ActivePage.Controls[i] is TListView) then
      ListView := TListView(PageControl1.ActivePage.Controls[i]);
    if (PageControl1.ActivePage.Controls[i] is TStatusBar) then
      StatusBar := TStatusBar(PageControl1.ActivePage.Controls[i]);
  end;

example error:

  with PageControl1 do
  begin
    if (ActivePage.Controls[tabSheet.TabIndex] is TListView) then
      ListView := TListView(ActivePage.Controls[tabSheet.TabIndex]);
    if (PageControl1.ActivePage.Controls[i] is TStatusBar) then
      StatusBar := TStatusBar(PageControl1.ActivePage.Controls[i]);
  end;

thank you
0
 
ProgsXAuthor Commented:
you says, I' m guessing because you are doing


you guesses what I does, you think what?
0
 
ProgsXAuthor Commented:
for destroy a tasheet

exemple:

  for i := 0 to PageControl1.ActivePage.ControlCount - 1 do
  begin
    if (PageControl1.ActivePage.Controls[i] is TTabSheet) then
    begin
      TabSheet := TTabSheet(PageControl1.ActivePage.Controls[i]);
      TabSheet.Destroy;
      PageControl1.ActivePageIndex := i-1;
    end;
  end;
0

Featured Post

Hire Technology Freelancers with Gigs

Work with freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely, and get projects done right.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now