Changing a Windows setting in a FWH-application

[driessen]

Hello,

I want to change a Windows setting in my application.

It concerns this setting :


I know that I have to logoff. That is no problem. I know how to do that.

Does anyone know how to establish this change?

Thanks a lot in advance for any help.

[cnavarro]

Michel
Try changing the key
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Assistance\Client\1.0\Settings\ZoomPercent
And logoff

[driessen]

Christobal,

Unfortunately, this doesn't work. I even don't have this item in the register. Not with 100 % and not with 125 %.

[cnavarro]

Christobal,

Unfortunately, this doesn't work. I even don't have this item in the register. Not with 100 % and not with 125 %.

Which version of Windows you use?

[driessen]

I need it for Windows XP, Vista, 7 and 8(.1)

[driessen]

Christobal,

I noticed that this key is the one containing the dpi.

HKEY_CURRENT_USER\Control Panel\Desktop\Windowmetrics\AppliedDPI

It is a REG_DWORD key, containing the DPI hexadecimal.

But how can I read this value in a FWH-application?

I don't have that much experience with the register.

Thank you.

[nageswaragunupudi]

Code: Select all  Expand view

#ifndef HKEY_CURRENT_USER
   #define  HKEY_CURRENT_USER       2147483649        // 0x80000001
#endif


   local oReg

   oReg:= TReg32():New( HKEY_CURRENT_USER, "Control Panel\Desktop\Windowmetrics" )
   ? oReg:Get( "AppliedDPI", 0 )
   oReg:Set( "AppliedDPI", nNewValue )
 

[driessen]

Thanks a lot, Mr. Rao.