topic-41228

Natter

Posts: 1392

Joined: Mon May 14, 2007 09:49 AM

Resolution of monitor
Posted: Thu Dec 23, 2021 01:47 PM

Hi,

The resolution of my monitor is 1920 x 1080. However, the ScrResolution() function returns
{ 1536, 864 }. Why ?

Rick Lipkin

Posts: 2706

Joined: Fri Oct 07, 2005 01:50 PM

Re: Resolution of monitor
Posted: Thu Dec 23, 2021 02:28 PM

Natter

Try it this way ...

Code (fw): Select all Collapse

nSCR1 := GetSysMetrics(0)
nSCR2 := GetSysMetrics(1)

This will give you the horizontal and vertical resolution ...

Rick Lipkin

Natter

Posts: 1392

Joined: Mon May 14, 2007 09:49 AM

Re: Resolution of monitor
Posted: Thu Dec 23, 2021 02:43 PM

I tried it. Getsystemmetrics returns the same values. Mysticism

hmpaquito

Posts: 1515

Joined: Thu Oct 30, 2008 02:37 PM

Re: Resolution of monitor
Posted: Thu Dec 23, 2021 02:51 PM

viewtopic.php?f=3t=40901p=244894hilit=monitorsid=e6f0f91c756601dcbc3df2d2ebdf723c#p244894

&&&&

Natter

Posts: 1392

Joined: Mon May 14, 2007 09:49 AM

Re: Resolution of monitor
Posted: Thu Dec 23, 2021 03:02 PM

So what ?

dutch

Posts: 1598

Joined: Fri Oct 07, 2005 05:56 PM

Re: Resolution of monitor
Posted: Thu Dec 23, 2021 04:25 PM

Hi Natter,

Because of Display Setup (Scale and Layout is 125%)

Natter wrote:Hi,

The resolution of my monitor is 1920 x 1080. However, the ScrResolution() function returns
{ 1536, 864 }. Why ?

Regards,

Dutch

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(Thailand)

Natter

Posts: 1392

Joined: Mon May 14, 2007 09:49 AM

Re: Resolution of monitor
Posted: Thu Dec 23, 2021 04:56 PM

Yes, dutch, you're right. Thanks !

Can I get this scale from FWH ?

Marc Venken

Posts: 1487

Joined: Tue Jun 14, 2016 07:51 AM

Re: Resolution of monitor
Posted: Thu Dec 23, 2021 11:31 PM

I believe that Uwe found a solution in this topic ....

http://forums.fivetechsupport.com/viewtopic.php?f=3&t=34845&hilit=scale+monitor&sid=581ff73d708640259f7dd5d859b26a12

Marc Venken

Using: FWH 23.08 with Harbour

driessen

Posts: 1467

Joined: Mon Oct 10, 2005 11:26 AM

Re: Resolution of monitor
Posted: Sat Dec 25, 2021 03:21 PM

Is there a function that can read the scaling of your desktop?

Thanks.

Regards,

Michel D.
Genk (Belgium)

_____________________________________________________________________________________________

I use : FiveWin for (x)Harbour v. 25.12 - Harbour 3.2.0 (May 2025) - xHarbour Builder (January 2020) - Bcc773

Natter

Posts: 1392

Joined: Mon May 14, 2007 09:49 AM

Re: Resolution of monitor
Posted: Sat Dec 25, 2021 09:59 PM

It is not possible to get DPI yet. It might be worth trying in the registry

Jimmy

Posts: 1772

Joined: Thu Sep 05, 2019 05:32 AM

Re: Resolution of monitor
Posted: Sun Dec 26, 2021 05:49 AM

hi,

there are different Way to get Scale-Factor.

for single Monitor you can use "real" / "virtual" Desktop Size to get Scale-Factor

Code (fw): Select all Collapse

#define HORZRES              0x0008   // (  8) Horizontal width in pixels
#define VERTRES              0x000A   // ( 10) Vertical width in pixels
#define LOGPIXELSX           0x0058   // ( 88) Logical pixels/inch in X
#define LOGPIXELSY           0x005A   // ( 90) Logical pixels/inch in Y
#define DESKTOPVERTRES       0x0075   // (117) Vertical height  of entire desktop in pixels
#define DESKTOPHORZRES       0x0076   // (118) Horizontal width of entire desktop in pixels

Function GetDeskSize(nHDC,lVirtual)
LOCAL nWidth,nHeight
   nWidth  := HMG_CallDLL('GDI32.dll', DLL_OSAPI, 'GetDeviceCaps', nHDC, iif(lVirtual, HORZRES, DESKTOPHORZRES))
   nHeight := HMG_CallDLL('GDI32.dll', DLL_OSAPI, 'GetDeviceCaps', nHDC, iif(lVirtual, VERTRES, DESKTOPVERTRES))
RETURN{nWidth,nHeight}

---

for multi-Monitor you need

MonitorFromWindow https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-monitorfromwindow
GetScaleFactorForMonitor https://docs.microsoft.com/en-us/windows/win32/api/shellscalingapi/nf-shellscalingapi-getscalefactorformonitor
DEVICE_SCALE_FACTOR https://docs.microsoft.com/en-us/windows/win32/api/shtypes/ne-shtypes-device_scale_factor

GetScaleFactorForDevice is IMHO outdate
https://docs.microsoft.com/en-us/windows/win32/api/shellscalingapi/nf-shellscalingapi-getscalefactorfordevice

greeting,

Jimmy

Natter

Posts: 1392

Joined: Mon May 14, 2007 09:49 AM

Re: Resolution of monitor
Posted: Sun Dec 26, 2021 10:57 AM

Jimmy, great! GetDeviceCaps(DC, 117/118) works correctly

karinha

Posts: 8515

Joined: Tue Dec 20, 2005 07:36 PM

Re: Resolution of monitor
Posted: Sun Sep 04, 2022 04:12 PM

Hi Jimmy, how do I do this in FiveWin? I don't use HMG.

Hola Jimmy, ¿cómo hago esto en FiveWin? No uso HMG.

Regards, saludos.

João Santos - São Paulo - Brasil - Phone: +55(11)95150-7341

Jimmy

Posts: 1772

Joined: Thu Sep 05, 2019 05:32 AM

Re: Resolution of monitor
Posted: Sun Sep 04, 2022 04:49 PM

hi karinha,

karinha wrote:how do I do this in FiveWin? I don't use HMG.

FiveWin have in c:\fwh\source\winapi\device.c

Code (fw): Select all Collapse

HB_FUNC( GETDEVICECAPS )     //  ()    HDC, int iIndex

so as Natter wrote use

Code (fw): Select all Collapse

#define DESKTOPVERTRES       0x0075   // (117) Vertical height  of entire desktop in pixels
#define DESKTOPHORZRES       0x0076   // (118) Horizontal width of entire desktop in pixels

   Vertical   := GetDeviceCaps(DC, 0x0075) 
   Horizontal := GetDeviceCaps(DC, 0x0076)

greeting,

Jimmy

karinha

Posts: 8515

Joined: Tue Dec 20, 2005 07:36 PM

Re: Resolution of monitor
Posted: Sun Sep 04, 2022 05:06 PM

Hola Jimmy, ¿puedes hacer un ejemplo completo y funcional? Necesito cambiar la RESOLUCIÓN DEL VIDEO a 1280x768 en tiempo real y luego volver a la RESOLUCIÓN DEL CLIENTE como estaba antes. ¿Es posible o no?

Hi Jimmy, can you make a complete and working example? I need to change the VIDEO RESOLUTION to 1280x768 in realtime, and then go back to CLIENT RESOLUTION as it was before. Is it possible or not?

WINDOW 7 and WINDOWS 10 please.

Gracias, thanks.

Origen:

http://forums.fivetechsupport.com/viewtopic.php?f=6&t=42143&sid=f7177597dbec68af574f19f84a5e1875

Regards, saludos.

João Santos - São Paulo - Brasil - Phone: +55(11)95150-7341

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