BBjSystemMetrics::getDevicePixelRatio

Description

In BBj 15.0 and higher, this BBjSystemMetrics method returns the ratio of physical to logical pixels on the client screen device. High-DPI ("retina") displays report values greater than 1 (typically 2).

Syntax

Return Value	Method
BBjNumber	getDevicePixelRatio()
BBjNumber	getDevicePixelRatio(int `screen`)

Parameters

Variable	Description
screen	Specifies the screen number. Must be >= 0 and < BBjSystemMetrics::getScreenCount.

Return Value

Returns the ratio of physical to logical pixels on the client screen device.

Remarks

In BUI, DWC, and WebUI, this method corresponds to the browser's window.devicePixelRatio value.

Example

rem ' BBjSystemMetrics::getDevicePixelRatio

sysgui = unt
open (sysgui)"X0"
sysgui! = bbjapi().getSysGui()
metrics! = sysgui!.getSystemMetrics()
print "Default:"
print "getScreenResolution:",metrics!.getScreenResolution()," DPI"
print "getDevicePixelRatio:",metrics!.getDevicePixelRatio()
print "getScreenSize: ",metrics!.getScreenSize()
print "getScreenBounds: ",metrics!.getScreenBounds()
print "getScreenInsets: ",metrics!.getScreenInsets()
screens = metrics!.getScreenCount()
for screen = 0 to screens-1
    print ""
    print "Screen",screen,":"
    print "getDevicePixelRatio",screen,":",metrics!.getDevicePixelRatio(screen)
    print "getScreenSize",screen,":",metrics!.getScreenSize(screen)
    print "getScreenBounds",screen,":",metrics!.getScreenBounds(screen)
    print "getScreenInsets",screen,":",metrics!.getScreenInsets(screen)
next screen