Solved

How can I change the height of a listview header?

Posted on 2010-09-13
12
1,408 Views
Last Modified: 2012-05-10
Hi,

How can I change the height of a listview header?
I have searched on the internet, but didn't find anyting
that made sense.

Who can help me?

Peter Kiers
0
Comment
Question by:peterkiers
  • 6
  • 5
12 Comments
 
LVL 12

Accepted Solution

by:
Hypo earned 500 total points
Comment Utility
try this code... It resets itself when you resize columns, but at least it's a good start...

/Hypo
procedure TForm1.SetListViewHeaderHeight(AListView : TListView; AHeight : integer);
var aHeaderHandle: HWND;
    aLayout: _HD_LAYOUT;
    aRect: TRect;
    aWindowPos: tagWINDOWPOS;
begin
  // Get header to handle...
  aHeaderHandle := ListView_GetHeader(AListView.Handle);
  //
  aRect := AListView.ClientRect;
  // Setup HeaderLayout...
  aLayout.Rect := @aRect;
  aLayout.WindowPos := @aWindowPos;
  // Get header metrics...
  if not Header_Layout(aHeaderHandle, @aLayout) then
    RaiseLastOSError;
  // Resize the header...
  SetWindowPos(aHeaderHandle,
               aWindowPos.hwndInsertAfter,
               aWindowPos.x,
               aWindowPos.Y,
               aWindowPos.cx,
               AHeight,
               aWindowPos.flags);
  // Repaint the header...
  InvalidateRect(aHeaderHandle, nil, true);
end;

Open in new window

0
 
LVL 24

Expert Comment

by:jimyX
Comment Utility
I have had similar issue long time ago. What I did is that I created two ListViews, one showing only the header on top of the other that has hidden header (see the attached pic).
In the Columns Editor I set the Minwidth, Maxwidth, and the Width of the columns of the Header ListView to be equivalent to the width of the second ListView columns to prevent the header columns of being re-sized so not to lose the columns' structure.

But if re-sizing the columns is necessary all you have to do is capturing the column resizing event at the Header ListView then re-size the other one to keep the respective columns in the same width.

To capture a column re-size event:
http://www.swissdelphicenter.ch/torry/showcode.php?id=1264

JG
Listview-e.g.bmp
0
 
LVL 12

Expert Comment

by:Hypo
Comment Utility
btw. I see now that I forgot to include the required uses clause... I think the example I provided requires CommCtrl, ComCtrls apart from the usual standard units. (can't try it right now)
0
 
LVL 1

Author Comment

by:peterkiers
Comment Utility
I am trying HYPO's solution now, and i get a few errors:

  [Pascal Error] Main.pas(89): E2003 Undeclared identifier: '_HD_LAYOUT'
  [Pascal Error] Main.pas(94): E2003 Undeclared identifier: 'ListView_GetHeader'
  [Pascal Error] Main.pas(98): E2010 Incompatible types: 'TRect' and 'Pointer'
  [Pascal Error] Main.pas(101): E2003 Undeclared identifier: 'Header_Layout'

Is there something that I should declare at uses?

P.
0
 
LVL 12

Expert Comment

by:Hypo
Comment Utility
What version of Delphi do you use?
0
 
LVL 1

Author Comment

by:peterkiers
Comment Utility
How can I call for this procedure and I want to change the height of the panels to 19.
Where in the code should I put 19.
0
How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

 
LVL 12

Expert Comment

by:Hypo
Comment Utility
Yep, with Delphi 6, all I have to add is the CommCtrl unit to the uses clause... try that and it should work.

/Hypo
0
 
LVL 1

Author Comment

by:peterkiers
Comment Utility
Borland Developer Studio 2006
0
 
LVL 1

Author Comment

by:peterkiers
Comment Utility
CommCtrl works
0
 
LVL 1

Author Comment

by:peterkiers
Comment Utility
How can I call for this procedure and I want to change the height of the panels to 19.
Where in the code should I put 19.
0
 
LVL 12

Expert Comment

by:Hypo
Comment Utility
I made a small example in a button... just setup a list view on your form, then add a button, and try it out...

procedure TForm1.Button1Click(Sender: TObject);
begin
  SetListViewHeaderHeight(ListView1, 19 {HERE IS WHERE YOU PUT YOUR HEIGHT});
end;

I think you should be able to use it in one of the resize events... But I'll have to check if there are any issues with putting it there first...

/Hypo
0
 
LVL 1

Author Comment

by:peterkiers
Comment Utility
Your solution works fine.

Greetings, Peter Kiers
0

Featured Post

Highfive Gives IT Their Time Back

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

Join & Write a Comment

Suggested Solutions

Creating an auto free TStringList The TStringList is a basic and frequently used object in Delphi. On many occasions, you may want to create a temporary list, process some items in the list and be done with the list. In such cases, you have to…
Introduction Raise your hands if you were as upset with FireMonkey as I was when I discovered that there was no TListview.  I use TListView in almost all of my applications I've written, and I was not going to compromise by resorting to TStringGrid…
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, Just open a new email message.  In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…
This tutorial demonstrates a quick way of adding group price to multiple Magento products.

772 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

10 Experts available now in Live!

Get 1:1 Help Now