Programmatically disable caps lock

问题

I'm using SendKeys in an automation program for work. I've been plodding along, and am now trying to iron out all the bugs that I've created :-)

One of which, is that when I used SendKeys.Send("Test"), if the CapsLock is on, it will produce "tEST" as opposed to "Test".

I've used the following code to attempt to detect the capsLock state, and toggle it if necessary:

bool tmp = Control.IsKeyLocked(Keys.CapsLock);
if (tmp)
{
     keybd_event(0x14, 0x45, KEYEVENTF_EXTENTEDKEY, (UIntPtr)0);
     keybd_event(0x14, 0x45, KEYEVENTF_EXTENTEDKEY | KEYEVENTF_KEYUP, (UIntPtr)0);
     //Application.DoEvents(); <-Testing.
}

And then immediately use SendKeys to send some text:

SendKeys.SendWait("This Is An Over Capitalized Test String");

Which STILL comes out as: "tHIS iS aN oVER cAPITALIZED tEST sTRING".

Is there any way to get around this problem?

Answered! Just to clarify for anyone else, the problem was resolved by using

SendKeys.SendWait("{CAPSLOCK}" + text);

I first attempted to use:

SendKeys.SendWait("{CAPSLOCK}");
SendKeys.SendWait("This Is An Over Capitalized Test String");

Which did not work at all.

回答1:

does this work for you?

    if(Control.IsKeyLocked(Keys.CapsLock))
        SendKeys.SendWait("{CAPSLOCK}This Is An Over Capitalized Test String");
    else
        SendKeys.SendWait("This Is An Over Capitalized Test String");

回答2:

I have an application, where I frequently need to switch between left-SHIFT and TAB. On my keyboard CAPSLOCK is between those 2 keys and I mistake now and then, typing a CAPSLOCK instead of a TAB. My solution is to reverse CAPSLOCK and submit a TAB instead. To my surprise the program loops until stack-overflow. I found out that the CAPSLOCK-key is send twice. This is my final solution:

Dim CapsLockProg As Integer = 0 ' after Send Capslock arrives 2 times!!!!!
Private Sub Description_KeyDown(sender As Object, e As KeyEventArgs) Handles Description.KeyDown 
    If e.KeyCode = Keys.Capital Then
        If CapsLockProg < 2 Then
            CapsLockProg += 1
            If CapsLockProg = 1 Then
                Windows.Forms.SendKeys.SendWait("{TAB}{CAPSLOCK}")
            'Else
            '   ignore 2nd Capslock
            End If 
        Else
            CapsLockProg = 0
        End If
    End If
    If e.KeyCode = Keys.Tab Then 
    rest of code

来源：https://stackoverflow.com/questions/7962211/programmatically-disable-caps-lock

标签

sendkeys

capslock