How blank mouse pointer on OS4? (Solved)

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ChrisH

Posted on: 2012/8/4 15:57 #1

Home away from home

Is there any official way to blank the mouse pointer on OS4?

I assume there must be, but so far I have only found code to do it on OS3, and that is such yucky low-level stuff that I doubt it work on OS4 (and even if it worked it must be depreciated). For example:

Quote:

#include <graphics/gfxmacros.h>
#include <hardware/custom.h>

OFF_SPRITE;
custom.spr[0].dataa = 0; /* sprite0 DMA */
custom.spr[0].datab = 0; /* data register */

ON_SPRITE;

(DMouse)

Quote:

#include <clib/graphics_protos.h>

struct SimpleSprite simplesprite = {
NULL, /* UWORD *posctldata; filled later */
0, /* UWORD height; */
0, 0, /* UWORD x,y; current position */
0 /* UWORD num; */
};

Forbid();
FreeSprite(0);
GetSprite(&simplesprite, 0);
Permit();

(MouseBlanker - and I haven't yet worked-out how it unblanks the mouse!)

Edited by ChrisH on 2012/8/4 19:05:02

Author of the PortablE programming language.

ChrisH

Re: How blank mouse pointer on OS4?

Posted on: 2012/8/4 17:05 #2

Home away from home

I'm now suspecting that I might be able to achieve what I want using SetWindowPointer(), but need to find out how to create a (blank) pointer...

Author of the PortablE programming language.

Samurai_Crow

Re: How blank mouse pointer on OS4?

Posted on: 2012/8/4 17:51 #3

Just popping in

I think you need to create a simple_sprite structure. I'm not sure if ext_sprite structures are even supported by the OS 4 pointer.

I know for sure that 16-color pointers aren't supported but that wasn't what you asked.

ChrisH

Re: How blank mouse pointer on OS4?

Posted on: 2012/8/4 18:01 #4

Home away from home

@Samurai_Crow
I don't think a sprite structure is needed for Set*Window*Pointer().

@anyone (!)
I thought this code would help, but not enough it seems. I am beginning to get annoyed now (i.e. I am all out of ideas for the moment). AFAICS, the following code *should* work:


PROC blankMousePointer(win:PTR TO window)

    DEF bitmap:PTR TO bitmap, pointer:APTR

    

    IF bitmap  := AllocBitMap(16, 16, 2, BMF_STANDARD OR BMF_CLEAR /*OR BMF_DISPLAYABLE*/, NIL)

        IF pointer := NewObjectA(NIL, /*classID*/ 'pointerclass', [POINTERA_BITMAP,bitmap, TAG_END]:tagitem)

            SetWindowPointer(win, [WA_POINTER,pointer, TAG_END]:tagitem)

        ENDIF

    ENDIF

ENDPROC

(This is E code, but it should be almost identical to equivalent C code.)

Author of the PortablE programming language.

Gazelle

Re: How blank mouse pointer on OS4?

Posted on: 2012/8/4 18:59 #5

Just popping in

Just some thoughts:

You're using NewObject*A*() but SetWindowPointer() with the same []:tagitem construct. I don't know which one is correct.

The tag is "POINTERA_BitMap", aren't tags case sensitive?

Have you tried with additional tags:


POINTERA_BitMap,      bitmap,

POINTERA_XOffset,     0,

POINTERA_YOffset,     0,

POINTERA_WordWidth,   1,

POINTERA_XResolution, POINTERXRESN_SCREENRES,

POINTERA_YResolution, POINTERYRESN_SCREENRESASPECT,

TAG_DONE

Have you checked if AllocBitMap() or NewObjectA() fail?

ChrisH

Re: How blank mouse pointer on OS4?

Posted on: 2012/8/4 19:04 #6

Home away from home

@Gazelle Quote:

You're using NewObject*A*() but SetWindowPointer() with the same []:tagitem construct. I don't know which one is correct.

Thank you! I should have been using SetWindowPointerA(). Who knows how long that would have taken me to spot? It works brilliantly now, thanks

P.S. My shown code fragment is not "final", because I don't take care to deallocate anything.

Author of the PortablE programming language.

ChrisH

Re: How blank mouse pointer on OS4? (Solved)

Posted on: 2012/8/9 19:22 #7

Home away from home

It turns out that I am making this way too complicated, as it can be achieved much simpler:


PROC blankMousePointer(win:PTR TO window)

    SetPointer(win, [0,0]:UINT, 0, 0, 0, 0)

ENDPROC



PROC unblankMousePointer(win:PTR TO window)

    IF win THEN ClearPointer(win)

ENDPROC

(This will need OPT POINTER until the next beta release of PortablE r6)

Thanks to BillEaves for the big hint!

Author of the PortablE programming language.

broadblues

Re: How blank mouse pointer on OS4? (Solved)

Posted on: 2012/8/9 20:13 #8

Home away from home

Another option is to use the def_nonepointer.info that comes with OS4.1

Blender For OS4.x : Blues : Walker Broad

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