获取当前系统的DPI值

1月72021

作者：绿色风发布：2021-1-7 4:00 Thursday 分类：UDF(收集) 阅读：3040次评论：0条


; enum _PROCESS_DPI_AWARENESS
Global Const $PROCESS_DPI_UNAWARE = 0
Global Const $PROCESS_SYSTEM_DPI_AWARE = 1
Global Const $PROCESS_PER_MONITOR_DPI_AWARE = 2

; enum _MONITOR_DPI_TYPE
Global Const $MDT_EFFECTIVE_DPI = 0
Global Const $MDT_ANGULAR_DPI = 1
Global Const $MDT_RAW_DPI = 2
Global Const $MDT_DEFAULT = $MDT_EFFECTIVE_DPI

;~ 96 - 100%
;~ 120 - 125%

_WinAPI_SetProcessDpiAwareness($PROCESS_PER_MONITOR_DPI_AWARE)

Local $aMonitors = _WinAPI_EnumDisplayMonitors()
If Not IsArray($aMonitors) Then Exit MsgBox(0, "", "EnumDisplayMonitors error")

Local $aDPI, $_fake
For $i = 1 To $aMonitors[0][0]
    $aDPI = _WinAPI_GetDpiForMonitor($aMonitors[$i][0], $MDT_DEFAULT)
    $_fake = IsArray($aDPI) ? MsgBox(0, "Monitor #" &amp; $i, $aDPI[0] &amp; ":" &amp; $aDPI[1]) : MsgBox(0, "Monitor #" &amp; $i, "error")
Next

Exit
Func _WinAPI_SetProcessDpiAwareness($DPIAware)
    DllCall("Shcore.dll", "long", "SetProcessDpiAwareness", "int", $DPIAware)
    If @error Then Return SetError(1, 0, 0)
EndFunc   ;==&gt;_WinAPI_SetProcessDpiAwareness

Func _WinAPI_GetDpiForMonitor($hMonitor, $dpiType)
    Local $X, $Y
    Local $aRet = DllCall("Shcore.dll", "long", "GetDpiForMonitor", "long", $hMonitor, "int", $dpiType, "uint*", $X, "uint*", $Y)
    If @error Or Not IsArray($aRet) Then Return SetError(1, 0, 0)
    Local $aDPI[2] = [$aRet[3], $aRet[4]]
    Return $aDPI
EndFunc   ;==&gt;_WinAPI_GetDpiForMonitor

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