[share] BN_PUSHED for BN_PUSHBUTTON with accelerator

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Overclick

Joined: 11 Jul 2020
Posts: 670
Location: Ukraine

Overclick 01 Sep 2020, 13:51

Hi
I want to share my experience how I win a battle against BN_PUSHBUTTON without needs to create subclass and Proc for it to get Pushed state. All you need is BS_NOTIFY style. I share it cause I used a lot of time by myself for searching this solution. I hope it help someone.

Code:

.data
        buttonstimer_16 db 0
        buttonstimer_count dw 200
        buttonstimer_stage dw 0
        activebuttonfocus dw 0
.code
wm_command:
        mov     rax,[wParam]
        mov     rbx,rax
        shr     rax,16

        cmp     rax,BN_CLICKED
        je      bn_clicked
        cmp     rax,BN_DOUBLECLICKED
        je      bn_pushed
        cmp     rax,BN_SETFOCUS
        je      bn_setfocus
        cmp     rax,BN_KILLFOCUS
        je      removebuttonstimer

        xor     rax,rax
        ret

        bn_setfocus:
                mov     [activebuttonfocus],bx
                invoke  SetTimer,[hWnd],15,50,0
                xor     rax,rax
                ret
        bn_clicked:
                cmp     bx,ID_YOUR_BUTTON
                je      removebuttonstimer
                xor     rax,rax
                ret
        bn_pushed:
                ;...
                ;do whatever you want here as single click
                ;...
                ret
wm_timer:
        cmp     [wParam],15
        je      buttonstimer
        cmp     [wParam],16
        je      bn_pushedtimer

        xor     rax,rax
        ret
        buttonstimer:
                cmp     [activebuttonfocus],0
                jne     @F
                jmp     removebuttonstimerself
                @@:
                invoke  SendDlgItemMessage,[hWnd],[activebuttonfocus],\
                                BM_GETSTATE,0,0
                bt      ax,3
                jc      @F
                removebuttonstimerself:
                invoke  KillTimer,[hWnd],15
                jmp     removebuttonstimer
                @@:
                bt      ax,2
                jnc     removebuttonstimer
                cmp     [buttonstimer_16],0
                jne     @F
                invoke  SetTimer,[hWnd],16,500,0
                mov     [buttonstimer_16],1
                jmp     bn_pushed
                @@:     
                xor     rax,rax
                ret
                removebuttonstimer:
                invoke  KillTimer,[hWnd],16
                mov     [buttonstimer_16],0
                mov     [buttonstimer_count],200
                mov     [buttonstimer_stage],0
                xor     rax,rax
                ret
        bn_pushedtimer:
                cmp     [activebuttonfocus],0
                je      removebuttonstimerself
                inc     [buttonstimer_stage]
                cmp     [buttonstimer_stage],1
                jne     @F
                jmp     setbn_pushedtimer
                @@:
                cmp     [buttonstimer_stage],10
                jne     @F
                mov     [buttonstimer_count],100
                jmp     setbn_pushedtimer
                @@:
                cmp     [buttonstimer_stage],30
                jne     bn_pushed
                mov     [buttonstimer_count],20
                setbn_pushedtimer:
                invoke  SetTimer,[hWnd],16,[buttonstimer_count],0
                jmp     bn_pushed

If you don't need accelerator just watch for BM_GETSTATE returned flags for Pushed state.

01 Sep 2020, 13:51

bitRAKE

Joined: 21 Jul 2003
Posts: 4260
Location: vpcmpistri

bitRAKE 01 Sep 2020, 16:52

I really like these kinds of helpful snippets of functionality. Are you trying to do a toggle state or something like that? I'll need to create a template to try this out and see what the effect is.

OFFTOPIC: "bt eax,3" is one byte shorter and the same functionality.

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01 Sep 2020, 16:52

Overclick

Joined: 11 Jul 2020
Posts: 670
Location: Ukraine

Overclick 01 Sep 2020, 17:35

Quote:

I really like these kinds of helpful snippets of functionality. Are you trying to do a toggle state or something like that? I'll need to create a template to try this out and see what the effect is.

You don't need that))

Quote:

"bt eax,3" is one byte shorter and the same functionality.

I'll keep in mind, thanks. I'm sure there is some more optimisations can be done.

01 Sep 2020, 17:35

bitRAKE

Joined: 21 Jul 2003
Posts: 4260
Location: vpcmpistri

bitRAKE 01 Sep 2020, 20:36

So, it's just to simplify owner drawn buttons?

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01 Sep 2020, 20:36

Overclick

Joined: 11 Jul 2020
Posts: 670
Location: Ukraine

Overclick 01 Sep 2020, 22:21

It is BN_PUSHBUTTON which have limited notifications especially for Pushed stage.

01 Sep 2020, 22:21

bitRAKE

Joined: 21 Jul 2003
Posts: 4260
Location: vpcmpistri

bitRAKE 02 Sep 2020, 01:11

Very interesting. I would call it "duration sensitive button messaging".

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02 Sep 2020, 01:11

Roman

Joined: 21 Apr 2012
Posts: 1980

Roman 15 Jul 2022, 13:55

How many SetTimer-s could sets ?
For example i have 20 buttons. I want do 20 times SetTimer.
And how SetTimer cpu usage ? How load Cpu?

And why Settimer need hwnd? To sand messages window?

15 Jul 2022, 13:55

Furs

Joined: 04 Mar 2016
Posts: 2653

Furs 16 Jul 2022, 15:53

SetTimer needs hwnd because it posts WM_TIMER to the window if you decide to not use a callback.

If you don't want this and simply want a callback (function) called, then you can pass NULL to hwnd and supply the last argument to the function of your choice.

16 Jul 2022, 15:53

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