225->175
========

AA_EnableHighDpiScaling
QWindowsContext::nonClientMetrics dpi= 216
QWindowsTheme::refreshFonts NONCLIENTMETRICS(iMenu=43x43, lfCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfSmCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfMenuFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfMessageFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfStatusFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27))
6.3.1 windows windowsvista
highDpiScaleFactorRoundingPolicy=Qt::HighDpiScaleFactorRoundingPolicy::PassThrough

\\.\DISPLAY1", 1707x960+0+0, dpr=2.25, 96DPI
\\.\DISPLAY2", 1680x1050+3840+139, dpr=1, 96DPI
DPR=2.25, 96dpi
GeneralFont: "Segoe UI" 9pt, -1px, Z=6x8
TitleFont  : "Segoe UI" 9pt, -1px, Z=6x8
FixedFont  : "Courier New" 9pt, -1px, Z=5x7

QWindowsContext::nonClientMetrics dpi= 168
QWindowsTheme::refreshFonts NONCLIENTMETRICS(iMenu=33x33, lfCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfSmCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfMenuFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfMessageFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfStatusFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21))
QWindowsContext::nonClientMetrics dpi= 168
QWindowsTheme::refreshFonts NONCLIENTMETRICS(iMenu=33x33, lfCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfSmCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfMenuFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfMessageFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfStatusFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21))

Window::slotDump
\\.\DISPLAY1", 2194x1234+0+0, dpr=1.75, 96DPI
\\.\DISPLAY2", 1680x1050+3840+139, dpr=1, 96DPI
DPR=1.75, 96dpi
GeneralFont: "Segoe UI" 12pt, -1px, Z=8x11
TitleFont  : "Segoe UI" 12pt, -1px, Z=8x11
FixedFont  : "Courier New" 9pt, -1px, Z=5x7

QWindowsContext::nonClientMetrics dpi= 168
QWindowsTheme::refreshFonts NONCLIENTMETRICS(iMenu=33x33, lfCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfSmCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfMenuFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfMessageFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfStatusFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21))
QWindowsContext::nonClientMetrics dpi= 168
QWindowsTheme::refreshFonts NONCLIENTMETRICS(iMenu=33x33, lfCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfSmCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfMenuFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfMessageFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfStatusFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21))
QWindowsContext::nonClientMetrics dpi= 168
QWindowsTheme::refreshFonts NONCLIENTMETRICS(iMenu=33x33, lfCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfSmCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfMenuFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfMessageFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfStatusFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21))

C:\dev\projects> qtbug101951_63\debug\qtbug101951.exe
AA_EnableHighDpiScaling
QWindowsContext::nonClientMetrics dpi= 168
QWindowsTheme::refreshFonts NONCLIENTMETRICS(iMenu=33x33, lfCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfSmCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfMenuFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfMessageFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfStatusFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21))
6.3.1 windows windowsvista
highDpiScaleFactorRoundingPolicy=Qt::HighDpiScaleFactorRoundingPolicy::PassThrough

\\.\DISPLAY1", 2194x1234+0+0, dpr=1.75, 96DPI
\\.\DISPLAY2", 1680x1050+3840+139, dpr=1, 96DPI
DPR=1.75, 96dpi
GeneralFont: "Segoe UI" 12pt, -1px, Z=8x11
TitleFont  : "Segoe UI" 12pt, -1px, Z=8x11
FixedFont  : "Courier New" 9pt, -1px, Z=5x7


C:\dev\projects> qtbug101951_63\debug\qtbug101951.exe
AA_EnableHighDpiScaling
QWindowsContext::nonClientMetrics dpi= 168
QWindowsTheme::refreshFonts NONCLIENTMETRICS(iMenu=33x33, lfCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfSmCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfMenuFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfMessageFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21), lfStatusFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-21))
6.3.1 windows windowsvista
highDpiScaleFactorRoundingPolicy=Qt::HighDpiScaleFactorRoundingPolicy::PassThrough

\\.\DISPLAY1", 2194x1234+0+0, dpr=1.75, 96DPI
\\.\DISPLAY2", 1680x1050+3840+139, dpr=1, 96DPI
DPR=1.75, 96dpi
GeneralFont: "Segoe UI" 12pt, -1px, Z=8x11
TitleFont  : "Segoe UI" 12pt, -1px, Z=8x11
FixedFont  : "Courier New" 9pt, -1px, Z=5x7

Revert (225->175):
==================

AA_EnableHighDpiScaling
QWindowsContext::nonClientMetrics dpi= 0
QWindowsTheme::refreshFonts NONCLIENTMETRICS(iMenu=43x43, lfCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfSmCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfMenuFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfMessageFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfStatusFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27))
6.4.0 windows windowsvista
highDpiScaleFactorRoundingPolicy=Qt::HighDpiScaleFactorRoundingPolicy::PassThrough

DELL UP2414Q", 1707x960+0+0, dpr=2.25, 96DPI
HP L2245w", 1680x1050+3840+139, dpr=1, 96DPI
DPR=2.25, 96dpi
GeneralFont: "Segoe UI" 9pt, -1px, Z=6x8
TitleFont  : "Segoe UI" 9pt, -1px, Z=6x8
FixedFont  : "Courier New" 9pt, -1px, Z=5x7

QWindowsContext::nonClientMetrics dpi= 0
QWindowsTheme::refreshFonts NONCLIENTMETRICS(iMenu=43x43, lfCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfSmCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfMenuFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfMessageFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfStatusFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27))
QWindowsContext::nonClientMetrics dpi= 0
QWindowsTheme::refreshFonts NONCLIENTMETRICS(iMenu=43x43, lfCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfSmCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfMenuFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfMessageFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfStatusFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27))

Window::slotDump
DELL UP2414Q", 2194x1234+0+0, dpr=1.75, 96DPI
HP L2245w", 1680x1050+3840+139, dpr=1, 96DPI
DPR=1.75, 96dpi
GeneralFont: "Segoe UI" 12pt, -1px, Z=8x11
TitleFont  : "Segoe UI" 12pt, -1px, Z=8x11
FixedFont  : "Courier New" 12pt, -1px, Z=6x9

QWindowsContext::nonClientMetrics dpi= 0
QWindowsTheme::refreshFonts NONCLIENTMETRICS(iMenu=43x43, lfCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfSmCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfMenuFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfMessageFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfStatusFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27))
QWindowsContext::nonClientMetrics dpi= 0
QWindowsTheme::refreshFonts NONCLIENTMETRICS(iMenu=43x43, lfCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfSmCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfMenuFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfMessageFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfStatusFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27))
QWindowsContext::nonClientMetrics dpi= 0
QWindowsTheme::refreshFonts NONCLIENTMETRICS(iMenu=43x43, lfCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfSmCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfMenuFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfMessageFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfStatusFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27))

C:\dev\projects>qtbug101951_63\debug\qtbug101951.exe
AA_EnableHighDpiScaling
QWindowsContext::nonClientMetrics dpi= 0
QWindowsTheme::refreshFonts NONCLIENTMETRICS(iMenu=43x43, lfCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfSmCaptionFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfMenuFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfMessageFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27), lfStatusFont=LOGFONT("Segoe UI", lfWidth=0, lfHeight=-27))
6.4.0 windows windowsvista
highDpiScaleFactorRoundingPolicy=Qt::HighDpiScaleFactorRoundingPolicy::PassThrough

DELL UP2414Q", 2194x1234+0+0, dpr=1.75, 96DPI
HP L2245w", 1680x1050+3840+139, dpr=1, 96DPI
DPR=1.75, 96dpi
GeneralFont: "Segoe UI" 12pt, -1px, Z=8x11
TitleFont  : "Segoe UI" 12pt, -1px, Z=8x11
FixedFont  : "Courier New" 12pt, -1px, Z=6x9