How can I press both function key (fn) and f11 at the same time using the sendkeys method?

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Or, how about this, sending the key's code (ASCII) instead the key itself?

Hallo Everybody,

How can I press both the function key (fn) and f11 at the same time using the sendkeys method?

I tried like this:

C#

var WshShell = new ActiveXObject("WScript.Shell");
                WshShell.AppActivate(this);
                WshShell.SendKeys("FN{F11}");

but this is not working.

Help me,

Thanks

Posted 18-Apr-11 23:41pm

Yonathan1111

Updated 8-Aug-16 6:30am

v2

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Comments

Manfred Rudolf Bihy 19-Apr-11 5:58am

What are you trying to achieve? Why not just WshShell.SendKeys("{F11}");

Toniyo Jackson 19-Apr-11 6:01am

Actually there is Fn key in some laptops. I think he is talking about that.

4 solutions

Solution 2

You don't need to send "Fn"; that is merely a hardware feature on the laptop keyboard. All you need is the correct string for the key in question as described here[^].

Posted 19-Apr-11 2:13am

Richard MacCutchan

Comments

Manfred Rudolf Bihy 19-Apr-11 8:48am

Exactly 5+!

Sergey Alexandrovich Kryukov 19-Apr-11 12:12pm

No! I just tested my Fn. If produces strange key combination (Left|OemClear) but it is a "normal" key handled as WM_KEYUP, WM_KEYDOWN.
Please see my answer.
--SA

Solution 4

Hi,

The soluction is:

Firt) Chande de propriety of form (windowsforms) "Start Position" to manual;
Second) Use this code:

C#

this.Location = Screen.AllScreens[1].WorkingArea.Location;

This index is a number of screen. For example, "0" is a principal screen of the windows. Remember: Windows 10 implement any screens.

Posted 8-Aug-16 6:30am

DRAGAOcc

Comments

Richard Deeming 8-Aug-16 12:58pm

This question was asked, answered, and solved over FIVE YEARS AGO.

Also, your "solution" has absolutely nothing to do with the question.

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Toniyo Jackson · Accepted Answer · 2011-04-19T00:00:00

Solution 1

Sendkeys can only deal with keys known to and processed by windows. In
most cases, the FN key deals directly with the hardware, and not through the
o/s.

I suspect that Fn keys are hardwired and need special methods to pick them
up.

Check this link[^].

Posted 19-Apr-11 0:00am

Toniyo Jackson

Comments

OriginalGriff 19-Apr-11 6:06am

Sounds about right! Beat me to it :)

Sergey Alexandrovich Kryukov 19-Apr-11 12:06pm

No, there is absolutely nothing special about them.
I just tested my Fn. If produces strange key combination (Left|OemClear) but it is a "normal" key handled as WM_KEYUP, WM_KEYDOWN.
--SA
Please see my answer.
--SA

Sergey Alexandrovich Kryukov · Accepted Answer · 2011-04-19T06:05:00

Solution 3

The functionality of SendKey is very limited. For completely authentic simulation of input you need to use P/Invoke for Windows API SendInput.

There is nothing special about Fn, but it can be non-standard (maybe depending on hardware, I'm not sure). Is is handled as WM_KEYUP, WM_KEYDOWN as any other key.

Please understand that using keyboard simulation as a dirty work-around to get desired UI behavior is unacceptable. It can be uses only for special "system" purposes, such as creation of keyboard macro tools, virtual keyboards, etc.

—SA

Posted 19-Apr-11 6:05am

Sergey Alexandrovich Kryukov

Updated 19-Apr-11 6:14am

v2

Comments

Richard MacCutchan 19-Apr-11 12:31pm

Very interesting, but the questioner wants to use the Sendkeys() function to send a key message. The hardware operation is irrelevant in this instance, as evidenced in the MSDN page I linked to.

Sergey Alexandrovich Kryukov 19-Apr-11 13:41pm

I agree with your answer in part where you say OP does not need to use SendKeys.
And I agree hardware operation is irrelevant, so what?
I think we don't know the OP's purpose, but the idea is certainly wrong.
You see, on my keyboard Fn + F11 does not mean anything, but on other notebook it could be significant. Just wrong approach.

Richard MacCutchan 19-Apr-11 14:24pm

Yes, you're right. I suspect that the key combinations he is talking about are actually not sent beyond the BIOS or driver level.

Sergey Alexandrovich Kryukov 19-Apr-11 15:24pm

Well, they can be sent via SendInput, for sure (it is a very close simulation of hardware keyboard), but what's the use?

Thank you for the discussion.
--SA