wrong screen resolution in clearwin+ under win8.1

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.

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

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

program main
include <windows.ins>
integer m1,m2
m1 = GetSystemMetrics(SM_CXSCREEN)
m2 = ClearWin_Info@('SCREEN_WIDTH')
print*, m1,m2
m1 = GetSystemMetrics(SM_CYSCREEN)
m2 = ClearWin_Info@('SCREEN_DEPTH')
print*, m1,m2
end

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

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

Eddie

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

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).

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

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.

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

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

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

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

The posts that roused no interest were:

DPI awareness and Logical screen DPI

Eddie

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.

paul,

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

Chemie

Hello,

and only for information:

the problem depends only by my notebook, perhaps due to the intel driver.

At my desktopcomputer, I have now a 4k Monitor and a 4k grafikcard. clearwin_info@(screen_width) and clearwin_info@(screen_depth) gives the corect values of 3840 x 2160.

Chemie