WM_KEYDOWN: repeatcount

[gelatine1]

I wanted to test the repeatcount part of the lparam parameter when the message loop found a WM_KEYDOWN. In the Msdn reference i read that bits 0-15 of lparam contain this:

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.

I tried to write the value of this lower word of lparam to my file like this:

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mov ebx,lParam

mov ecx,[pmem]  ;[pmem] contains the address, [[pmem]] contains the value at that address
mov word ptr [ecx],bx 

;I write the contents of the [pmem] buffer to my file


Everything compiles and my program doesn't crash but although I have some issues with the output. Whenever I tried holding my key down (for 5 seconds). I simply got the output 01 in my file, several times although. Instead it should've been just a single 1C (for example) or am I wrong ?

Thanks in advance,
Jannes

[dedndave]

as i recall, the count indicates "it has repeated"   :P
try WM_CHAR, which is sent for each char, repeatedly

[gelatine1]

Whats in fact the difference between WM_CHAR and WM_KEYDOWN ?

What if my function is like this (pseudocode)

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if uMsg==WM_KEYDOWN
print 2
else if uMsg==WM_CHAR
print 4


the output will always be 2 no matter which key is pressed ? (which would mean both messages are sent at the same moment) or could we expect an output like 24 (or 42) somehow ? (which would mean 2 different messages are sent)

Thanks in advance

[qWord]

Whats in fact the difference between WM_CHAR and WM_KEYDOWN ?

WM_CHAR is produced by TranslateMessage when receiving WM_KEYDOWN. Commonly this function is called in the message loop after GetMessage().