public static extern int GetProcessDpiAwareness(IntPtr processHandle, out NativeMethods.PROCESS_DPI_AWARENESS awareness);
public static extern int SetProcessDpiAwareness(NativeMethods.PROCESS_DPI_AWARENESS awareness);
/// <summary>
/// Sets the DPI awareness. If not available on the current OS, it falls back to the next possible.
/// </summary>
/// <returns>true/false - If the process DPI awareness is successfully set, returns true. Otherwise false.</returns>
internal static bool SetWinformsApplicationDpiAwareness(HighDpiMode highDpiMode)
{
NativeMethods.PROCESS_DPI_AWARENESS dpiFlag = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_DPI_UNINITIALIZED;
// For Windows 10 RS2 and above
if (ApiHelper.IsApiAvailable(ExternDll.User32, nameof(SafeNativeMethods.SetProcessDpiAwarenessContext)))
{
int rs2AndAboveDpiFlag;
switch (highDpiMode)
{
case HighDpiMode.SystemAware:
rs2AndAboveDpiFlag = NativeMethods.DPI_AWARENESS_CONTEXT_SYSTEM_AWARE;
break;
case HighDpiMode.PerMonitor:
rs2AndAboveDpiFlag = NativeMethods.DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE;
break;
case HighDpiMode.PerMonitorV2:
// Necessary for RS1, since this SetProcessDpiAwarenessContext IS available here.
rs2AndAboveDpiFlag = SafeNativeMethods.IsValidDpiAwarenessContext(NativeMethods.DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2) ?
NativeMethods.DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2 :
NativeMethods.DPI_AWARENESS_CONTEXT_SYSTEM_AWARE;
break;
case HighDpiMode.DpiUnawareGdiScaled:
// Let's make sure, we do not try to set a value which has been introduced in later Windows releases.
rs2AndAboveDpiFlag = SafeNativeMethods.IsValidDpiAwarenessContext(NativeMethods.DPI_AWARENESS_CONTEXT_UNAWARE_GDISCALED) ?
NativeMethods.DPI_AWARENESS_CONTEXT_UNAWARE_GDISCALED :
NativeMethods.DPI_AWARENESS_CONTEXT_UNAWARE;
break;
default:
rs2AndAboveDpiFlag = NativeMethods.DPI_AWARENESS_CONTEXT_UNAWARE;
break;
}
return(SafeNativeMethods.SetProcessDpiAwarenessContext(rs2AndAboveDpiFlag));
}
// For operating systems Windows 8.1 to Windows 10 RS1 version.
else if (ApiHelper.IsApiAvailable(ExternDll.ShCore, nameof(SafeNativeMethods.SetProcessDpiAwareness)))
{
switch (highDpiMode)
{
case HighDpiMode.DpiUnaware:
case HighDpiMode.DpiUnawareGdiScaled:
dpiFlag = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_DPI_UNAWARE;
break;
case HighDpiMode.SystemAware:
dpiFlag = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_SYSTEM_DPI_AWARE;
break;
case HighDpiMode.PerMonitor:
case HighDpiMode.PerMonitorV2:
dpiFlag = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_PER_MONITOR_DPI_AWARE;
break;
default:
dpiFlag = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_SYSTEM_DPI_AWARE;
break;
}
return(SafeNativeMethods.SetProcessDpiAwareness(dpiFlag) != NativeMethods.S_OK);
}
// For operating systems windows 7 to windows 8
else if (ApiHelper.IsApiAvailable(ExternDll.User32, nameof(SafeNativeMethods.SetProcessDPIAware)))
{
switch (highDpiMode)
{
case HighDpiMode.DpiUnaware:
case HighDpiMode.DpiUnawareGdiScaled:
// We can return, there is nothing to set if we assume we're already in DpiUnaware.
return(true);
case HighDpiMode.SystemAware:
case HighDpiMode.PerMonitor:
case HighDpiMode.PerMonitorV2:
dpiFlag = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_SYSTEM_DPI_AWARE;
break;
}
if (dpiFlag == NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_SYSTEM_DPI_AWARE)
{
return(SafeNativeMethods.SetProcessDPIAware());
}
}
return(false);
}
public static bool SetWinformsApplicationDpiAwareness()
{
NativeMethods.PROCESS_DPI_AWARENESS pROCESS_DPI_AWARENESS = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_DPI_UNINITIALIZED;
Version version = Environment.OSVersion.Version;
if (!IsDpiAwarenessValueSet() || Environment.OSVersion.Platform != PlatformID.Win32NT)
{
return(false);
}
string text = (dpiAwarenessValue ?? string.Empty).ToLowerInvariant();
if (version.CompareTo(System.Windows.Forms.ConfigurationOptions.RS2Version) >= 0)
{
int processDpiAwarenessContext;
switch (text)
{
case "true":
case "system":
processDpiAwarenessContext = -2;
break;
case "true/pm":
case "permonitor":
processDpiAwarenessContext = -3;
break;
case "permonitorv2":
processDpiAwarenessContext = -4;
break;
default:
processDpiAwarenessContext = -1;
break;
}
if (!SafeNativeMethods.SetProcessDpiAwarenessContext(processDpiAwarenessContext))
{
return(false);
}
}
else if (version.CompareTo(new Version(6, 3, 0, 0)) >= 0 && version.CompareTo(System.Windows.Forms.ConfigurationOptions.RS2Version) < 0)
{
switch (text)
{
case "false":
pROCESS_DPI_AWARENESS = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_DPI_UNAWARE;
break;
case "true":
case "system":
pROCESS_DPI_AWARENESS = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_SYSTEM_DPI_AWARE;
break;
case "true/pm":
case "permonitor":
case "permonitorv2":
pROCESS_DPI_AWARENESS = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_PER_MONITOR_DPI_AWARE;
break;
default:
pROCESS_DPI_AWARENESS = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_DPI_UNINITIALIZED;
break;
}
if (SafeNativeMethods.SetProcessDpiAwareness(pROCESS_DPI_AWARENESS) != 0)
{
return(false);
}
}
else
{
if (version.CompareTo(new Version(6, 1, 0, 0)) < 0 || version.CompareTo(new Version(6, 3, 0, 0)) >= 0)
{
return(false);
}
switch (text)
{
case "false":
pROCESS_DPI_AWARENESS = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_DPI_UNAWARE;
break;
case "true":
case "system":
case "true/pm":
case "permonitor":
case "permonitorv2":
pROCESS_DPI_AWARENESS = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_SYSTEM_DPI_AWARE;
break;
default:
pROCESS_DPI_AWARENESS = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_DPI_UNINITIALIZED;
break;
}
if (pROCESS_DPI_AWARENESS == NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_SYSTEM_DPI_AWARE && !SafeNativeMethods.SetProcessDPIAware())
{
return(false);
}
}
return(true);
}
/// <summary>
/// Sets DPI awareness for the process by reading configuration value from app.config file
/// </summary>
/// <returns>true/false - If process DPI awareness is successfully set, returns true. Otherwise false.</returns>
public static bool SetWinformsApplicationDpiAwareness()
{
NativeMethods.PROCESS_DPI_AWARENESS dpiFlag = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_DPI_UNINITIALIZED;
Version currentOSVersion = Environment.OSVersion.Version;
if (!IsDpiAwarenessValueSet() || Environment.OSVersion.Platform != System.PlatformID.Win32NT)
{
return(false);
}
string dpiAwareness = (dpiAwarenessValue ?? string.Empty).ToLowerInvariant();
if (currentOSVersion.CompareTo(ConfigurationOptions.RS2Version) >= 0)
{
int rs2AndAboveDpiFlag;
switch (dpiAwareness)
{
case "true":
case "system":
rs2AndAboveDpiFlag = NativeMethods.DPI_AWARENESS_CONTEXT_SYSTEM_AWARE;
break;
case "true/pm":
case "permonitor":
rs2AndAboveDpiFlag = NativeMethods.DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE;
break;
case "permonitorv2":
rs2AndAboveDpiFlag = NativeMethods.DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2;
break;
case "false":
default:
rs2AndAboveDpiFlag = NativeMethods.DPI_AWARENESS_CONTEXT_UNAWARE;
break;
}
if (!SafeNativeMethods.SetProcessDpiAwarenessContext(rs2AndAboveDpiFlag))
{
return(false);
}
}
// For operating systems windows 8.1 to Windows 10 redstone 1 version.
else if (currentOSVersion.CompareTo(new Version(6, 3, 0, 0)) >= 0 && currentOSVersion.CompareTo(ConfigurationOptions.RS2Version) < 0)
{
switch (dpiAwareness)
{
case "false":
dpiFlag = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_DPI_UNAWARE;
break;
case "true":
case "system":
dpiFlag = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_SYSTEM_DPI_AWARE;
break;
case "true/pm":
case "permonitor":
case "permonitorv2":
dpiFlag = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_PER_MONITOR_DPI_AWARE;
break;
default:
dpiFlag = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_DPI_UNINITIALIZED;
break;
}
if (SafeNativeMethods.SetProcessDpiAwareness(dpiFlag) != NativeMethods.S_OK)
{
return(false);
}
}
// For operating systems windows 7 to windows 8
else if (currentOSVersion.CompareTo(new Version(6, 1, 0, 0)) >= 0 && currentOSVersion.CompareTo(new Version(6, 3, 0, 0)) < 0)
{
switch (dpiAwareness)
{
case "false":
dpiFlag = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_DPI_UNAWARE;
break;
case "true":
case "system":
case "true/pm":
case "permonitor":
case "permonitorv2":
dpiFlag = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_SYSTEM_DPI_AWARE;
break;
default:
dpiFlag = NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_DPI_UNINITIALIZED;
break;
}
if (dpiFlag == NativeMethods.PROCESS_DPI_AWARENESS.PROCESS_SYSTEM_DPI_AWARE)
{
if (!SafeNativeMethods.SetProcessDPIAware())
{
return(false);
}
}
}
// For windows vista and below, this is not a supported feature.
else
{
return(false);
}
return(true);
}
