[Coco] Syscall to get the window screen and width

[plt]

In Basic09 is there a way to find the current window that your using?

Thanks

On Sat, March 8, 2025 15:11, Wayne Campbell via Coco wrote:
> This should work, but I haven't tested it.
>
>
> TYPE REG=cc,a,b,dp:BYTE; x,y,u:INTEGER
> DIM regs:REG \(* registers type
> DIM callCode,path:BYTE
> DIM erCode,cols,rows:INTEGER
>
>
> OPEN #path,"/w":READ \ (* open path to window - /w is next available
> window, specify which device here callCode:=$8D \(* getstat call
> regs.a:=path
> regs.b:=$26
> RUN SysCall(callCode,regs)
> IF LAND(regs.cc,1)<>0 THEN \ (* Carry set on error
> erCode:=regs.b \ (* Error code (if any)
> (* handle error *)
> ELSE
> cols:=regs.x
> rows:=regs.y
> ENDIF
>
>
>
>
>
> On Sat, Mar 8, 2025, 6:19 AM plt via Coco <coco at maltedmedia.com> wrote:
>
>
>>
>> I am not sure if this will the screen width and length but can you
>> provide a example of how to do the system call and get the return
>> results please?
>>
>> How can you get the current window if /w1 or /w2?
>>
>>
>> Chapter 9. System Calls NitrOS-9 EOU Technical Reference Manual
>> SS.ScSiz Returns the window or screen size
>> Function Code $26
>> Entry Conditions:
>> A path number
>> B $26
>> Exit Conditions:
>> X number of columns on screen/window
>> Y number of rows on screen/window
>> Error Output:
>> CC carry set on error
>> B error code, if any
>>
>>
>> Chapter 9. System Calls NitrOS-9 EOU Technical Reference Manual
>> SS.ScSiz Returns the window or screen size
>> Function Code $26
>> Entry Conditions:
>> A path number
>> B $26
>> Exit Conditions:
>> X number of columns on screen/window
>> Y number of rows on screen/window
>> Error Output:
>> CC carry set on error
>> B error code, if any
>>
>>
>> Additional Information:
>>
>>
>> • Use this call to determine the size of an output screen. The values
>>  returned depend on the on device in use: ◦ For non-VTIO devices,
>> the call returns the COL and ROW values in the device descriptor. ◦
>> For VTIO/CoVDG devices, the call returns the size of the window or
>> screen in use by the specified device (32x16). ◦ For window
>> devices, the call returns the size of the of the current working area of
>> the window. • This call is handled by CoVDG, CoGrf/CoWin, SC6551,
>> SC6850, S16550 (and
>> any future serial port drivers).
>>
>>
>>
>>
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>>
>>
>
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