Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

How do I make my app hide from the taskbar.

Posted on 2000-02-27
13
Medium Priority
?
337 Views
Last Modified: 2010-04-04
How do I hide my application from the windows taskbar? I want my application to load in the system try witch i use a component called TrayIcon. But when I minimize my application, I want it to stay in the try and hide from the taskbar. I have tried:

ShowWindow(Application.Handle, SW_HIDE);

SetWindowLong(Application.Handle, GWL_EXSTYLE,
GetWindowLong(Application.Handle, GWL_EXSTYLE)
WS_EX_TOOLWINDOW and not WS_EX_APPWINDOW);

But all the above code does hide my application from the taskbar until I minimize it. Then a window appears on my desktop like a child Mdi window.

How can i fix this?

Thank's TCSCode.
0
Comment
Question by:TCSCode
  • 4
  • 3
  • 2
  • +4
13 Comments
 
LVL 1

Expert Comment

by:cobramania
ID: 2562558
Try these two codes:

procedure TServerForm.FormCreate(Sender: TObject);
begin
  ServerForm.Top := 5000;
end;


procedure TServerForm.FormActivate(Sender: TObject);
begin
  Application.Minimize;
  ShowWindow(Application.Handle, SW_HIDE);
end;


The first code is for creating the first form on top = 5000, so it's off the user screen, so the user can't see the blinking for while it disappear

The second code is for minimize it and then hide it.

Hope this helps :)
0
 
LVL 17

Expert Comment

by:inthe
ID: 2563265
listening..
0
 
LVL 20

Expert Comment

by:Madshi
ID: 2563991
Add this line to the first line of your project (*.dpr):

[begin]

  SetWindowLong(Application.Handle, GWL_EXSTYLE, GetWindowLong(Application.Handle, GWL_EXSTYLE) or WS_EX_TOOLWINDOW);

[Application.Initialize;
 ...]

Regards, Madshi.
0
Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

 

Author Comment

by:TCSCode
ID: 2564683
When I load my Application I want to use it. When I minimize my application I want it to disapear like Hideing the form ( Form1.Hide )  But with all the code i have shown you and all the code that I have been given in this question does'nt work completely. When I minimize my application useing Application.Minimize; I see a toolwindow or whatever it's called above my taskbar and on the desktop. How can I fix that problem I am useing Delphi 5 Pro. Thank's.
0
 
LVL 20

Expert Comment

by:Madshi
ID: 2564771
Try this:

type
  TYourMainForm = class(TForm)
  private
    procedure SysCommand(var Message: TWMSYSCOMMAND); message WM_SYSCOMMAND;
    ...

procedure TYourMainForm.SysCommand(var Message: TWMSYSCOMMAND);
begin
  if Message.CmdType and $FFF0 = SC_MINIMIZE then begin
    Message.result := 0;
    Hide;
  end else
    inherited;
end;

This should fix the behaviour when the user clicks the minimize button. Don't call Application.Minimize, call Application.MainForm.Hide instead.
0
 

Expert Comment

by:WMPeters
ID: 2565168
I had the same problem. The solution was placing the code in the right event of the form. Try different events, like create, or onactivate. I can look it up for you when i'm at home, but with a little puzzling you will find it. (sorry that i can not tell you the right event now, i'm at work...;) )

By the way, you used the right code. I can also give you the code to let it dissappear from the events list (when you press CTRL-ALT-DEL, again, i shall look it up for you.)
0
 
LVL 1

Expert Comment

by:titz
ID: 2573753
hi,

you must hide the parent-window , which is created by delphi and not shown! that is the solution.
you must only make a small change in your code:

var
owner:thandle;

begin
....
owner:=getwindow(handle,GW_OWNER);
showwindow(owner,SW_HIDE);
....
end;

These two lines of code you must insert, when the window shall be hidden from  the taskbar.

cheers
titz
0
 
LVL 1

Expert Comment

by:titz
ID: 2573762
sorry, one line code forgotten:

correct is:
.....
owner:=getwindow(handle,GW-OWNER);
showwindow(owner,SW_HIDE);
self.hide;
.....

this is now correct.

titz

0
 

Author Comment

by:TCSCode
ID: 2579131
Still does'nt work.
0
 

Author Comment

by:TCSCode
ID: 2579134
titz your code is what i am looking for thank's to get your points just answer this message and i'll send them. Thank's.
0
 

Accepted Solution

by:
Iliad earned 800 total points
ID: 2591663
Try doing the following in your project file...


To do this you will need to:
 
   Select the View - Project Source, from Delphi's main menu.
   Add the Windows unit to the uses clause.
   Add Application.ShowMainForm := False; to the line after "Application.Initialize;".
   Add: ShowWindow(Application.Handle, SW_HIDE); to the line before "Application.Run;" Your main project source file should now look something like
   this: program Project1; uses Windows, Forms, Unit1 in 'Unit1.pas' {Form1}, Unit2 in 'Unit2.pas' {Form2}; {$R *.RES} begin Application.Initialize;
   Application.ShowMainForm := False; Application.CreateForm(TForm1, Form1); Application.CreateForm(TForm2, Form2);
   ShowWindow(Application.Handle, SW_HIDE); Application.Run; end.
   In the "initialization" section (at the very bottom) of each unit that uses a form, add: begin ShowWindow(Application.Handle, SW_HIDE); end.
0
 
LVL 1

Expert Comment

by:titz
ID: 2592953
hi TCSCode,
you can choose my comment as answer. then i will get the points.
Therefor it is not necessary that i send a new answer !

sorry for i am retutning so late, but here was canaval ! you know, ...

cheers
titz
0
 

Author Comment

by:TCSCode
ID: 2594388
No problem, Thank's again.
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.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction The parallel port is a very commonly known port, it was widely used to connect a printer to the PC, if you look at the back of your computer, for those who don't have newer computers, there will be a port with 25 pins and a small print…
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…
This Micro Tutorial will teach you how to add a cinematic look to any film or video out there. There are very few simple steps that you will follow to do so. This will be demonstrated using Adobe Premiere Pro CS6.
This lesson discusses how to use a Mainform + Subforms in Microsoft Access to find and enter data for payments on orders. The sample data comes from a custom shop that builds and sells movable storage structures that are delivered to your property. …
Suggested Courses

824 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