dselkirk
17th September 2002 15:17 UTC

Hide a control?
  is is possible to hide a control?

kichik
17th September 2002 18:33 UTC

Nope, not yet.

dselkirk
17th September 2002 19:14 UTC

not even with sendmessage?

kichik
17th September 2002 19:16 UTC

No, you have to change the window's style with GetWindowLong and SetWindowLong, or just use the good old ShowWindow :)

dselkirk
17th September 2002 19:41 UTC

i was thinking of the showwindow but was trying to find a way without writing a plugin

dselkirk
17th September 2002 21:16 UTC

I tried creating a plugin but it hide the control. do you think there would be any limitation to using the ShowWindow api to hide a control.

kichik
17th September 2002 21:20 UTC

I tried creating a plugin but it hide the control

dselkirk
17th September 2002 21:27 UTC

yup, didn't work.

created a plugin called HideWin. in the function HideWin I call the following.

ShowWindow((HWND)variables,SW_HIDE);

In the script I call the following (for example)

GetDlgItem $R1 $HWNDPARENT 1028
HideWin $R1

kichik
17th September 2002 21:30 UTC

What's variables? Have you poped the variable out? Have you converted it to an integer value?

dselkirk
17th September 2002 21:38 UTC

i used ExDLL as a base. variables translates to $R1.

kichik
17th September 2002 21:43 UTC

You have to convert it to a number first. NSIS gives you a string, and HWND is actually a number. Use myatoi from NSIS source.

dselkirk
17th September 2002 21:51 UTC

I just tried that, still nothing.

kichik
17th September 2002 22:24 UTC

Use IsWindow in NSIS and in your DLL to check out if you get a real HWND.

dselkirk
18th September 2002 14:01 UTC

It does return a real hwnd

kichik
18th September 2002 14:23 UTC

Hmm... Get it's text, make sure it is the one you want. Make sure you are getting the control from the right window, you are currently getting it from the parent window, not the inner window.

dselkirk
18th September 2002 14:26 UTC

tried both, different controls, even the main window. the best I can do is get the main window to flash once.

dselkirk
18th September 2002 14:27 UTC

ohm and get this. the following code doesn't return a valid hwnd.

FindWindow $R1 "#32770" "" $HWNDPARENT
IsWindow $R1 +2 0
MessageBox MB_OK "not a window handle"

kichik
18th September 2002 14:30 UTC

FindWindow $R1 "#32770" "" $HWNDPARENT

should be:

FindWindow $R1 "#32770" 0 $HWNDPARENT

If I remember correctly. Try it...

dselkirk
18th September 2002 14:51 UTC

nope, the same.

kichik
18th September 2002 15:03 UTC

FindWindow $R8 "#32770" "" $HWNDPARENT

GetDlgItem $R8 $R8 1006

SetStaticBkColor $R8 0x00BAFAFF 

>

dselkirk
18th September 2002 16:27 UTC

just playin withit and for some reason the findwindow isn't returnning a hwnd.

FindWindow $R1 "#32770" "" $HWNDPARENT

returns 0

I'm doing it on the nextpage of a test installer, latest cvs

here's the test

Name "Test Install"
OutFile "test.exe"

DirText "Choose dir"

Section ""
SectionEnd

Function .onNextPage
FindWindow $R1 "#32770" "" $HWNDPARENT
MessageBox MB_OK $R1
FunctionEnd

kichik
18th September 2002 16:53 UTC

In .onNextPage the dialog hasn't been created yet... Use .onInitDialog.

dselkirk
18th September 2002 18:22 UTC

that just fixed the problem with the findwindow returning 0. I switched after you posted that message about the critial error. I switched it back to oninitdialog. still doesn't work. The plugin gets a valid hwnd too.

dselkirk
18th September 2002 18:24 UTC

sorry, the plgin say its not a valid hwnd when the script says it is.

dselkirk
18th September 2002 19:21 UTC

Thanks kichik, as you said, just needed to pop the string.

dselkirk
20th September 2002 14:31 UTC

ShowWin Plugin
---------------------------------------------------------

Description:
ShowWin is a small plugin which will allow you to hide,
show, enable and disable controls.

Usage:
ShowWin::Show hwnd
ShowWin::Hide hwnd
ShowWin::Enable hwnd
ShowWin::Disable hwnd

Example:
Hide the version label

GetDlgItem $R1 $HWNDPARENT 1028
ShowWin::Hide $R1

Also see ShowWin.nsi.

---------------------------------------------------------
Copyright (c) 2002 Don Selkirk

n_baua
27th November 2006 10:31 UTC

Can you just compile a plugin and put the dll...?
I may need it badly.

If this feature is already included in newer versions please let me know I am not aware much of NSIS functionality.

Thanks in advance.

Afrow UK
27th November 2006 11:23 UTC

The built in ShowWindow instruction doesn't work?

-Stu

n_baua
27th November 2006 13:31 UTC

Hi Afrow,
I just want to hide a single control, not the entire window, I tried sending msg to window as well.

kichik
27th November 2006 13:33 UTC

ShowWindow does exactly what this plug-in does. Get the HWND of the control you want to hide using FindWindow and GetDlgItem and use ShowWindow on it, passing 0 or ${WM_HIDE} on the second parameter.

n_baua
28th November 2006 06:45 UTC

Thanks kichik,

It worked for me.
NSIS rocks.

tpr
13th April 2007 23:55 UTC

Hello guys,

First of all thanks for all your help, I was able to remove the titlebar of an application (Opera) with

System::Call 'user32::SetWindowLong(i $5,i -16,i 339871820)'

The problem is that after the titlebar is gone and I right-click on Opera on the tray, there's no pop-up menu with close, minimize, etc items.
Is this a drawback of that method or is there a way to fix it?

Another question: how can I restore the titlebar after I've removed? Or it's impossible?

Thanks in advance,

tpr