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[Solved] How to show or hide the mouse while on other forms in the desktop ?
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Topic: [Solved] How to show or hide the mouse while on other forms in the desktop ? (Read 1645 times)
loaded
Jr. Member
Posts: 80
[Solved] How to show or hide the mouse while on other forms in the desktop ?
«
on:
February 17, 2017, 01:28:56 pm »
Hi all
It will be different from the following codes.
How can I hide the mouse as it applies to all programs on the desktop.
Code: Pascal
[Select]
procedure
TForm1
.
FormMouseEnter
(
Sender
:
TObject
)
;
begin
ShowCursor
(
False
)
;
end
;
procedure
TForm1
.
FormMouseLeave
(
Sender
:
TObject
)
;
begin
ShowCursor
(
True
)
;
end
;
and
Code: Pascal
[Select]
Form1
.
Cursor
:
=
crNone
;
// or Screen.Cursor:=crNone;
«
Last Edit: February 17, 2017, 06:33:48 pm by loaded
»
Logged
Installing the spelling, google translate is used
R0b0t1
Full Member
Posts: 171
Re: How to show or hide the mouse while on other forms in the desktop ?
«
Reply #1 on:
February 17, 2017, 04:12:29 pm »
Hello,
This is generally considered to be a poor design choice. If you still wish to do it it is likely you will need to create a way to do it for each platform you are interested in. Under Windows, for
example
(from
here
). As you might be able to glean from that solution it's a nonstandard thing to do and each Window expects to be able to set its own cursor style.
Logged
jacmoe
Sr. Member
Posts: 259
Re: How to show or hide the mouse while on other forms in the desktop ?
«
Reply #2 on:
February 17, 2017, 05:08:05 pm »
That's a "poor design choice" for desktop applications, but if you are using SDL/GLFW/whatever, then you can do this in a cross platform, consistent way.
Haven't done this (yet) with Lazarus/FPC, but there are several LCL/FPC game libraries around.
Logged
more signal - less noise
Thaddy
Hero Member
Posts: 5769
Re: How to show or hide the mouse while on other forms in the desktop ?
«
Reply #3 on:
February 17, 2017, 05:16:33 pm »
Well..
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recommends {$macro on}{$define Silly:=ObjFpc}
RAW
Hero Member
Posts: 643
Re: How to show or hide the mouse while on other forms in the desktop ?
«
Reply #4 on:
February 17, 2017, 05:30:09 pm »
The easiest way would probably be to build your own fully transparent cursor and load that one.
Like the attached one...
EDIT: exactly like the mouse in the picture...
EDIT2: But I would suggest to use ClipCursor or something like that, because a transparent cursor is still active, so the user can click on whatever...
«
Last Edit: February 17, 2017, 06:24:58 pm by RAW
»
Logged
Windows 7 Pro (x64 Sp1) And Windows XP Pro (x86 Sp3) - LAZARUS 1.8 FPC 3.0.4 // 1.7 FPC 3.1.1
loaded
Jr. Member
Posts: 80
Re: How to show or hide the mouse while on other forms in the desktop ?
«
Reply #5 on:
February 17, 2017, 06:33:34 pm »
Greeting Dear RAW and Dear Thaddy and Dear jacmoe and Dear R0b0t1
Thank you very much for solving my problem.
Code: Pascal
[Select]
....
uses
windows
,...
....
SetSystemCursor
(
Screen
.
Cursors
[
crNone
]
,
OCR_NORMAL
)
;
// hide
...
SystemParametersInfo
(
SPI_SETCURSORS
,
0
,
nil
,
WM_SETTINGCHANGE
or
SPIF_UPDATEINIFILE
)
;
// show
....
«
Last Edit: February 17, 2017, 06:49:14 pm by loaded
»
Logged
Installing the spelling, google translate is used
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