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Get display scale

 
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Antoshick
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Posts: 56
PostPosted: Sat Aug 29, 2020 3:42 am    Post subject: Get display scale Reply with quote
Hi there,
Can i with CE get display scale factor in Windows 10? Like 100%, or 175%, or 200%.
I just have a problem with 4K monitor and lua function 'setMousePos'. I use desktop scale 200% and desktop display resolution 4K, so when i try to set mouse cursor to center of game window

Code:

local x = game window resolution x / 2 + game window diff from left
local y = game window resolution y / 2 + game window diff from up
setMousePos(x,y)

i have wrong position (not centre). But if i use desktop scale 100% and desktop display resolution 4K, setMousePos(x,y) work fine (every time in centre of game window)
So i want to use scale factor for correct lua calculation

***************************************************
Update

Found that scale factor can be gain from windows registry, if know id of monitor.
Also found that
Code:
call user32.SetPhysicalCursorPos
called from asm from game will be use resolution for set mouse position without scale factor
But
Code:
setMousePos
called from lua engine will be use display resolution for set mouse position with scale factor.
So i use
Code:
call user32.SetPhysicalCursorPos


Thank
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blankTM
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Joined: 03 May 2020
Posts: 49
PostPosted: Sat Aug 29, 2020 12:14 pm    Post subject: Re: Get display scale Reply with quote
Code:

function Zoom()
local DC =executeCodeLocalEx('GetDC',0)
local DPIX=executeCodeLocalEx('GetDeviceCaps',DC,118)/executeCodeLocalEx('GetDeviceCaps',DC,8)
--local DPIY=getScreenHeight()/executeCodeLocalEx('GetDeviceCaps',DC,10)
executeCodeLocalEx('ReleaseDC',0,DC)
return DPIX
end
print(Zoom())


or
Use GetWindowRect to get the window rectangle

Code:

function GetWindowRect(hWnd)
local My = createMemoryStream()
My.Size= 16
executeCodeLocalEx('user32.GetWindowRect',hWnd,My.Memory)
local left= My.readDword()
if left > 0xffffff then
left= -0xfffffffe~left
end
local RECT ={
left=left,
top=My.readDword(),
right=My.readDword(),
bottom=My.readDword()
}
My.destroy()
return RECT
end
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Antoshick
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Joined: 02 Nov 2018
Posts: 56
PostPosted: Sat Aug 29, 2020 12:41 pm    Post subject: Re: Get display scale Reply with quote
blankTM wrote:
Code:

function Zoom()
local DC =executeCodeLocalEx('GetDC',0)
local DPIX=executeCodeLocalEx('GetDeviceCaps',DC,118)/executeCodeLocalEx('GetDeviceCaps',DC,8)
--local DPIY=getScreenHeight()/executeCodeLocalEx('GetDeviceCaps',DC,10)
executeCodeLocalEx('ReleaseDC',0,DC)
return DPIX
end
print(Zoom())


or
Use GetWindowRect to get the window rectangle

Code:

function GetWindowRect(hWnd)
local My = createMemoryStream()
My.Size= 16
executeCodeLocalEx('user32.GetWindowRect',hWnd,My.Memory)
local left= My.readDword()
if left > 0xffffff then
left= -0xfffffffe~left
end
local RECT ={
left=left,
top=My.readDword(),
right=My.readDword(),
bottom=My.readDword()
}
My.destroy()
return RECT
end


Thanks a lot!
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Antoshick
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PostPosted: Sat Aug 29, 2020 11:36 pm    Post subject: Re: Get display scale Reply with quote
blankTM wrote:
Code:
local DPIX=executeCodeLocalEx('GetDeviceCaps',DC,118)


Tell me please where you get index value, like 118 or 8.
On MSDN and other sites i see only string parametres, like for example HORZSIZE or VERTSIZE and others same.
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blankTM
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PostPosted: Sun Aug 30, 2020 1:04 am    Post subject: Re: Get display scale Reply with quote
Use C++ console to output parameters

or
/* Device Parameters for GetDeviceCaps() */
#define DRIVERVERSION 0 /* Device driver version */
#define TECHNOLOGY 2 /* Device classification */
#define HORZSIZE 4 /* Horizontal size in millimeters */
#define VERTSIZE 6 /* Vertical size in millimeters */
#define HORZRES 8 /* Horizontal width in pixels */
#define VERTRES 10 /* Vertical height in pixels */
#define BITSPIXEL 12 /* Number of bits per pixel */
#define PLANES 14 /* Number of planes */
#define NUMBRUSHES 16 /* Number of brushes the device has */
#define NUMPENS 18 /* Number of pens the device has */
#define NUMMARKERS 20 /* Number of markers the device has */
#define NUMFONTS 22 /* Number of fonts the device has */
#define NUMCOLORS 24 /* Number of colors the device supports */
#define PDEVICESIZE 26 /* Size required for device descriptor */
#define CURVECAPS 28 /* Curve capabilities */
#define LINECAPS 30 /* Line capabilities */
#define POLYGONALCAPS 32 /* Polygonal capabilities */
#define TEXTCAPS 34 /* Text capabilities */
#define CLIPCAPS 36 /* Clipping capabilities */
#define RASTERCAPS 38 /* Bitblt capabilities */
#define ASPECTX 40 /* Length of the X leg */
#define ASPECTY 42 /* Length of the Y leg */
#define ASPECTXY 44 /* Length of the hypotenuse */

#define LOGPIXELSX 88 /* Logical pixels/inch in X */
#define LOGPIXELSY 90 /* Logical pixels/inch in Y */

#define SIZEPALETTE 104 /* Number of entries in physical palette */
#define NUMRESERVED 106 /* Number of reserved entries in palette */
#define COLORRES 108 /* Actual color resolution */

// Printing related DeviceCaps. These replace the appropriate Escapes

#define PHYSICALWIDTH 110 /* Physical Width in device units */
#define PHYSICALHEIGHT 111 /* Physical Height in device units */
#define PHYSICALOFFSETX 112 /* Physical Printable Area x margin */
#define PHYSICALOFFSETY 113 /* Physical Printable Area y margin */
#define SCALINGFACTORX 114 /* Scaling factor x */
#define SCALINGFACTORY 115 /* Scaling factor y */

// Display driver specific

#define VREFRESH 116 /* Current vertical refresh rate of the */
/* display device (for displays only) in Hz*/
#define DESKTOPVERTRES 117 /* Horizontal width of entire desktop in */
/* pixels */
#define DESKTOPHORZRES 118 /* Vertical height of entire desktop in */
/* pixels */
#define BLTALIGNMENT 119 /* Preferred blt alignment */
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Antoshick
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Joined: 02 Nov 2018
Posts: 56
PostPosted: Sun Aug 30, 2020 2:13 am    Post subject: Re: Get display scale Reply with quote
blankTM wrote:
Use C++ console to output parameters

or
/* Device Parameters for GetDeviceCaps() */
#define DRIVERVERSION 0 /* Device driver version */
#define TECHNOLOGY 2 /* Device classification */
#define HORZSIZE 4 /* Horizontal size in millimeters */
#define VERTSIZE 6 /* Vertical size in millimeters */
#define HORZRES 8 /* Horizontal width in pixels */
#define VERTRES 10 /* Vertical height in pixels */
#define BITSPIXEL 12 /* Number of bits per pixel */
#define PLANES 14 /* Number of planes */
#define NUMBRUSHES 16 /* Number of brushes the device has */
#define NUMPENS 18 /* Number of pens the device has */
#define NUMMARKERS 20 /* Number of markers the device has */
#define NUMFONTS 22 /* Number of fonts the device has */
#define NUMCOLORS 24 /* Number of colors the device supports */
#define PDEVICESIZE 26 /* Size required for device descriptor */
#define CURVECAPS 28 /* Curve capabilities */
#define LINECAPS 30 /* Line capabilities */
#define POLYGONALCAPS 32 /* Polygonal capabilities */
#define TEXTCAPS 34 /* Text capabilities */
#define CLIPCAPS 36 /* Clipping capabilities */
#define RASTERCAPS 38 /* Bitblt capabilities */
#define ASPECTX 40 /* Length of the X leg */
#define ASPECTY 42 /* Length of the Y leg */
#define ASPECTXY 44 /* Length of the hypotenuse */

#define LOGPIXELSX 88 /* Logical pixels/inch in X */
#define LOGPIXELSY 90 /* Logical pixels/inch in Y */

#define SIZEPALETTE 104 /* Number of entries in physical palette */
#define NUMRESERVED 106 /* Number of reserved entries in palette */
#define COLORRES 108 /* Actual color resolution */

// Printing related DeviceCaps. These replace the appropriate Escapes

#define PHYSICALWIDTH 110 /* Physical Width in device units */
#define PHYSICALHEIGHT 111 /* Physical Height in device units */
#define PHYSICALOFFSETX 112 /* Physical Printable Area x margin */
#define PHYSICALOFFSETY 113 /* Physical Printable Area y margin */
#define SCALINGFACTORX 114 /* Scaling factor x */
#define SCALINGFACTORY 115 /* Scaling factor y */

// Display driver specific

#define VREFRESH 116 /* Current vertical refresh rate of the */
/* display device (for displays only) in Hz*/
#define DESKTOPVERTRES 117 /* Horizontal width of entire desktop in */
/* pixels */
#define DESKTOPHORZRES 118 /* Vertical height of entire desktop in */
/* pixels */
#define BLTALIGNMENT 119 /* Preferred blt alignment */


Thanks again!
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