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Chemie · Joined: 07 Mar 2015 Posts: 49

Hello,

I'm using the personal edition of ftn95 and now I have a Notebook with win 8.1 and a display resolution of 3200 x 1800. When I ask the screenresolution with clearwin_info@('SCREEN_WIDTH') and clearwin_info@('SCREEN_HEIGTH'), I get the values 1280 x 720. How can I get the right values?

Thank you for your response.

PaulLaidler · Posted: Mon Mar 09, 2015 8:32 pm Post subject:

Are you sure that the display resolution is 3200 x 1800? That seems very high.

Here are two equivalent ways to get the resolution...

dfwlms · Joined: 04 Jan 2005 Posts: 20 Location: Huntsville, Alabama

Chemie,

When I use the following commands with my 1920 x 1080 screen (Windows 7), I get the correct values.

nHpix_screen =clearwin_info@('SCREEN_WIDTH')
nVpix_screen =clearwin_info@('SCREEN_DEPTH')

Note that I use the word "depth" instead of "height'. My FTN95 version (5.5.0.0) is pretty old, and maybe that's why the word "depth" is required
_________________
David Williams
Retired Aerospace Engineer
Huntsville, Alabama

LitusSaxonicum · Posted: Mon Mar 09, 2015 9:37 pm Post subject:

Paul, It is astonishing, isn't it. But I did an internet search and found several, including Dell M3800

Eddie

Chemie · Joined: 07 Mar 2015 Posts: 49

dfwlms, your right, I also have used depth.

paul, I definitly use 3200 x 1800 pixel, its a asus zenbook ux 305.
I have tried other resolutions, but the result is not to understand:

uses resoltution result
3200 x 1800 1280 x 720
2560 x 1600 1280 x 800
2048 x 1536 1024 x 768
.
1920 x 1440 960 x 720
1920 x 1200 1280 x 800
1920 x 1080 1280 x 720
.

the only corect values are:
1280 x 800
1280 x 768
1152 x 804 and
1024 x 768

On my desktop I use 1920 x 1200, the vlues are there correct.

I don't know, is tis a problem of clearwin+ ore of the graphic driver of my notebook.

Thanks

PaulLaidler · Posted: Mon Mar 09, 2015 11:56 pm Post subject:

The call to GetSystemMetrics does not use ClearWin+. It accesses the Microsoft function of this name directly. So the problem does not appear to be in ClearWin+ (I am assuming that, if you run my program above then, like me, you get the equal values for m1 and m2 on the two printed lines).

Chemie · Joined: 07 Mar 2015 Posts: 49

paul,

you are right, the values for m1 and m2 are always equal, independent of the resolution.
When this is not a problem of clearwin+, but which part is responsible for the wrong values?

Thanks

PaulLaidler · Posted: Tue Mar 10, 2015 8:58 am Post subject:

I am guessing that the answer lies in the DIP setting for the display.

Here is a link...

https://msdn.microsoft.com/en-us/library/windows/desktop/dn469266(v=vs.85).aspx

You will need to copy the whole link manually. The URL parenthesis in this editor does not work for this link.

Wilfried Linder · Posted: Tue Mar 10, 2015 10:44 am Post subject:

Paul,

for links including brackets exists a simple workaround: Just replace ...

[ by %5B
] by %5D
( by %28
) by %29

Example:

https://msdn.microsoft.com/en-us/library/windows/desktop/dn469266%28v=vs.85%29.aspx

Wilfried

LitusSaxonicum · Posted: Tue Mar 10, 2015 2:04 pm Post subject:

Ah! The link is briliant. I have been wittering on about dpi settings for years, often getting no reply at all for a post, and this explains where Microsoft have been heading. But I haven't got further than Windows 7, and 8/8.1 have made additional strides.

You may (or may not!) find some of my postings on the subject of dpi that are helpful.

I first came across this in XP, with a relatively high resolution laptop, and it needed different layouts when the dpi setting was high. Windows 7 lies about its resolution for some dpi settings and does scaling itself. It does mess with Clearwin!

Eddie

DanRRight · Posted: Tue Mar 10, 2015 3:16 pm Post subject:

This was first time i encountered DPI issue. Before everything showed exactly the same res as the screen, usually 1920 by 1200 or 1080. I checked today and the tablet with native 3200x1800 showed 2300x1200 and anything up and down depending on DPI

Chemie · Joined: 07 Mar 2015 Posts: 49

Paul,

thank you for the link. Now, I need more time to read and understand all.

When I use a %gr-Window and I resize it to full screen, I get back with
clearwin_info@('GRAPHICS_WIDTH') and
clearwin_info@('GRAPHICS_DEPTH') the values
3000 x 1600.

I think, these are the correct values. Perhaps, I can correct my program due to these values.

Many thanks

Chemie

LitusSaxonicum · Posted: Tue Mar 10, 2015 3:59 pm Post subject:

The posts that roused no interest were:

DPI awareness
and
Logical screen DPI

Eddie

PaulLaidler · Posted: Tue Mar 10, 2015 7:34 pm Post subject:

If GRAPHICS_WIDTH and GRAPHICS_DEPTH give the required values then there may be a direct way to get this information via a call to GetClientRect or GetWindowRect using the HWND of the desktop.

Chemie · Joined: 07 Mar 2015 Posts: 49

paul,

sorry, GetClientRect gives the same wrong values of 1280 x 720, when the display has 3200 x 1800 pixel.

Chemie