WM_CLOSE opposite?

Afrow UK · 25th September 2004, 17:34

I want to hide a control and then show it later during installation progress.

I've found WM_CLOSE 0x10 will hide it, but it completely terminates it so I cannot get it back again!

-Stu

kichik · 25th September 2004, 17:40

Use ShowWindow. It can both show and hide.

Afrow UK · 25th September 2004, 20:43

Ah thanks, I have no idea how I forgot about that!

-Stu

Afrow UK · 27th September 2004, 18:27

Here's another WM question...

How can I dynamically select/unselect items in a listbox control.

-Stu

bluenet · 28th September 2004, 00:03

!define CB_GETCURSEL 0x0147
!define CB_SETCURSEL 0x014E

GetDlgItem $0 $HWND 1201
SendMessage $0 ${CB_GETCURSEL} -1 0 $1

GetDlgItem $0 $HWND 1202
SendMessage $0 ${CB_SETCURSEL} $1 0

Afrow UK · 28th September 2004, 20:05

SendMessage doesn't seem to work very well for NOTIFY events (on page leave).

You can use it to change strings, but for anything else it doesn't work correctly.

When I'd try to change the colour of a control, it would only change once you had set focus on it (ie background colours for combo boxes.)

Due to this, I couldn't get select all working either (had no effect whatsoever).

I'm going to try InstallOptionsEx now.

-Stu

Afrow UK · 28th September 2004, 20:28

Never mind. I should have did a bit of my own research.

The CB_GETCURSEL is not the right Message - It's for ComboBox's. I specifically said ListBox's.

The correct Message I found was LB_SELITEMRANGEEX (0x0183) and it works perfectly now.

Edit: And LB_SETSEL (0x0185) can be used to select none...
SendMessage $R0 ${LB_SETSEL} 0 -1

-Stu

25th September 2004, 17:34	#1
Afrow UK Moderator Join Date: Nov 2002 Location: Surrey, England Posts: 8,434	WM_CLOSE opposite? I want to hide a control and then show it later during installation progress. I've found WM_CLOSE 0x10 will hide it, but it completely terminates it so I cannot get it back again! -Stu

25th September 2004, 17:40	#2
kichik M.I.A. [NSIS Dev, Mod] Join Date: Oct 2001 Location: Israel Posts: 11,343	Use ShowWindow. It can both show and hide. NSIS FAQ \| NSIS Home Page \| Donate $ "I hear and I forget. I see and I remember. I do and I understand." -- Confucius

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25th September 2004, 20:43	#3
Afrow UK Moderator Join Date: Nov 2002 Location: Surrey, England Posts: 8,434	Ah thanks, I have no idea how I forgot about that! -Stu

27th September 2004, 18:27	#4
Afrow UK Moderator Join Date: Nov 2002 Location: Surrey, England Posts: 8,434	Here's another WM question... How can I dynamically select/unselect items in a listbox control. -Stu

28th September 2004, 00:03	#5
bluenet Senior Member Join Date: Mar 2004 Posts: 138	!define CB_GETCURSEL 0x0147 !define CB_SETCURSEL 0x014E GetDlgItem $0 $HWND 1201 SendMessage $0 ${CB_GETCURSEL} -1 0 $1 GetDlgItem $0 $HWND 1202 SendMessage $0 ${CB_SETCURSEL} $1 0

28th September 2004, 20:05	#6
Afrow UK Moderator Join Date: Nov 2002 Location: Surrey, England Posts: 8,434	SendMessage doesn't seem to work very well for NOTIFY events (on page leave). You can use it to change strings, but for anything else it doesn't work correctly. When I'd try to change the colour of a control, it would only change once you had set focus on it (ie background colours for combo boxes.) Due to this, I couldn't get select all working either (had no effect whatsoever). I'm going to try InstallOptionsEx now. -Stu

28th September 2004, 20:28	#7
Afrow UK Moderator Join Date: Nov 2002 Location: Surrey, England Posts: 8,434	Never mind. I should have did a bit of my own research. The CB_GETCURSEL is not the right Message - It's for ComboBox's. I specifically said ListBox's. The correct Message I found was LB_SELITEMRANGEEX (0x0183) and it works perfectly now. Edit: And LB_SETSEL (0x0185) can be used to select none... SendMessage $R0 ${LB_SETSEL} 0 -1 -Stu