how to program/use a touchscreen via fasm

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eisbaer

Joined: 25 Nov 2012
Posts: 8

eisbaer 16 Jan 2015, 00:29

for example Windows 8.1 Touch

Is there a sample program?

goal:
fast viewer for JPG files (show the files in the current folder)

Screen resolution 1280 x 800

6 large icons - at the top of the screen or on the left side of the screen

Free space (64x64 pixels) -
ICON (64x64 pixels) -
Gap (64x64 pixels) -
ICON (64x64 pixels) -
...

6 buttons = 6 functions

<back> <Image Rotate> <next image>
<image larger> <image smaller> <delete image>

any ideas?

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16 Jan 2015, 00:29

typedef

Joined: 25 Jul 2010
Posts: 2909
Location: 0x77760000

typedef 16 Jan 2015, 00:45

Quote:

/how to program/use a touchscreen via fasm

FASM is just an assembler that assembles assembly code which calls a system's API.

You need to consult the API.

16 Jan 2015, 00:45

sleepsleep

Joined: 05 Oct 2006
Posts: 12738
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sleepsleep 16 Jan 2015, 11:30

afaik, the touch tap is actually a click,
for multi-touch, one would need to refer windows 8 api,

https://www.google.com/search?q=windows+8+touch+api

16 Jan 2015, 11:30

donn

Joined: 05 Mar 2010
Posts: 321

donn 07 Jan 2016, 16:02

Not sure if this is any help, but a while ago, I was able to get multiple simultaneous taps on a touch tablet in Windows. I think it was fullscreen, so the coordinates were probably not Window-relative. It was also a quick test, so not aware of many limitations:

Code:

        int pointerID;
        POINTER_INFO pointerInfo;
        int x;
        int y;

Code:

case WM_POINTERDOWN:
        pointerID = GET_POINTERID_WPARAM(wparam);
        GetPointerInfo(pointerID, &pointerInfo);
        x = pointerInfo.ptPixelLocationRaw.x;
        y = pointerInfo.ptPixelLocationRaw.y;
        break;

This is C by the way, but may provide a starting place.

07 Jan 2016, 16:02

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