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Keyboard repeat count

Answer 1

A:

The repeat count is not cumulative according to MSDN:

The repeat count for the current message. The value is the number of times the keystroke is autorepeated as a result of the user holding down the key. If the keystroke is held long enough, multiple messages are sent. However, the repeat count is not cumulative.

So probably multiple WM_KEYDOWN message is generated.

Donotalo 2010-10-01 16:42:46

so how do i make use of the repeat count?? what purpose does it serve then? and how do i stop windows from sending multiple WM_KEYDOWN messages??

vinayak 2010-10-02 06:21:15

the documentation says: "If the keystroke is held long enough". that means, you can still use the repeat count if the key is released before "long enough" time has elapsed. not sure what is the time interval for "long enough" here. i never used repeat count. the doc also says, "The previous key state (bit 30) can be used to determine whether the WM_KEYDOWN message indicates the first down transition or a repeated down transition". i'm not sure if you can stop windows sending multiple messages. if you want to ignore some message, don't process it.

Donotalo 2010-10-02 22:18:14

so if i have to accelerate something i cannot do it based on the repeat count ... the longer the key is held more should be its acceleration ...

vinayak 2010-10-03 08:05:07

yep, according to my knowledge. you should accelerate until key is released.

Donotalo 2010-10-03 16:02:55

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Keyboard repeat count

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