Drag and drop.

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macgub

Joined: 11 Jan 2006
Posts: 338
Location: Poland

macgub 10 May 2011, 09:22

I want do drag'n drop support in my app. So I have questions:

Code:

121 - Drag'n drop

         In : rbx - 1 - Define Drag'n drop area

                  rcx - Pointer to area
                  rdx - Size of area

Pointer to wich area? I don't understand this. Size in pixels or in bytes? If I want define program window as d'n d area how can I do this? Maybye someone could give me simply example for d'n d Question

Thanks a lot.

10 May 2011, 09:22

Madis731

Joined: 25 Sep 2003
Posts: 2139
Location: Estonia

Madis731 11 May 2011, 18:36

I used it like this:

Code:

START:
    mov         rax,121
    mov         rbx,1
    mov         rcx,drag ; drag is a 256 byte definition by me
    mov         rdx,256
    int         0x60
;######
    cmp         [drag],0 ; When its 0, nothing has been written to "drop area"
    je          .resume_draw
    mov         rsi,drag ; When something's in it (a filename), make a copy
    mov         rdi,filename
    mov         rcx,32
    rep         movsq
    mov         [drag],0 ; We clear the first byte to accept more drag&drop
  .resume_draw:
;#########
filename        db '/FD/1/3DS/House.3ds',0
drag            rb 256

11 May 2011, 18:36

macgub

Joined: 11 Jan 2006
Posts: 338
Location: Poland

macgub 12 May 2011, 07:06

thx

12 May 2011, 07:06

Ville

Joined: 17 Jun 2003
Posts: 284

Ville 12 May 2011, 10:58

Here is an example program which displays the path and filename.
http://www.menuetos.net/drop.asm

12 May 2011, 10:58

macgub

Joined: 11 Jan 2006
Posts: 338
Location: Poland

macgub 13 May 2011, 08:36

So, to read drag'n drop data function 121, subfunction 2 is not needed ?

13 May 2011, 08:36

Ville

Joined: 17 Jun 2003
Posts: 284

Ville 13 May 2011, 09:05

Yes thats right, with 121/1 you get the filename and then read the file contents with 58/0.

13 May 2011, 09:05

macgub

Joined: 11 Jan 2006
Posts: 338
Location: Poland

macgub 13 May 2011, 09:26

OK. I try describe my problem step by step. I run my app in 32 bit mode. At first I switch to 64 bit mode and define d'n d area (function 121, subfunction 1)and switch to 32 bit mode. In main loop I check if something is written to d'n d area (still in 32bit). If yes i try read file from disk. Is that OK ?
The problem is: will my 32 bit app run drag and drop? It is 64 bit feature.

13 May 2011, 09:26

Ville

Joined: 17 Jun 2003
Posts: 284

Ville 13 May 2011, 10:05

It will work. And you can also define the int 0x60 -call directly from 32 bit mode, as long as 64 bit registers or bits 32-63 aren't used by the syscall.

Code:

     mov  eax , 121
     mov  ebx , 1
     mov  ecx , dragndrop
     mov  edx , 100
     int  0x60

13 May 2011, 10:05

macgub

Joined: 11 Jan 2006
Posts: 338
Location: Poland

macgub 13 May 2011, 12:25

OK it works. Very Happy

(Check www.macgub.vxm.pl for new release) Can I also call M64 memory managing functions from 32 bit mode ?

Last edited by macgub on 13 May 2018, 09:24; edited 1 time in total

13 May 2011, 12:25

Ville

Joined: 17 Jun 2003
Posts: 284

Ville 13 May 2011, 17:41

Yes you can. The system call does not make a difference whether the call came from a 32bit or 64bit process.
And good work. Smile

I'll include the 3ds viewer to next release.

13 May 2011, 17:41

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