/// <summary>
/// Checks if configuration setting is set to expected value
/// </summary>
/// <param name="configurationSettingName">Configuration setting name</param>
/// <param name="expectedValue">Expected value</param>
/// <returns>true/false</returns>
internal static bool IsExpectedConfigValue(string configurationSettingName, bool expectedValue)
{
string value = ConfigurationOptions.GetConfigSettingValue(configurationSettingName);
if (!bool.TryParse(value, out bool valueAsBool))
{
// neither 'true' nor 'false' - implies 'false'
valueAsBool = false;
}
return(valueAsBool == expectedValue);
}
internal static bool IsDpiAwarenessValueSet()
{
bool dpiAwarenessValueSet = false;
try
{
if (string.IsNullOrEmpty(dpiAwarenessValue))
{
dpiAwarenessValue = ConfigurationOptions.GetConfigSettingValue(ConfigurationStringConstants.DpiAwarenessKeyName);
}
}
catch
{
}
if (!string.IsNullOrEmpty(dpiAwarenessValue)) // setting in configuration wins
{
var value = dpiAwarenessValue.ToLowerInvariant();
switch (value)
{
case "true":
case "system":
case "true/pm":
case "permonitor":
case "permonitorv2":
dpiAwarenessValueSet = true;
break;
case "false":
System.Diagnostics.Debug.WriteLine(" 'DpiAwarenessValue' is set to 'false', value = " + value);
break;
default:
System.Diagnostics.Debug.WriteLine("Either 'DpiAwarenessValue' is not set or 'DpiAwarenessValue' set is invalid in app.config, value set = " + value);
break;
}
}
return(dpiAwarenessValueSet);
}
internal static void InitializeDpiHelperQuirks()
{
if (isDpiHelperQuirksInitialized)
{
return;
}
try
{
// Redstone 2 or greater, where all APIs required by this feature are available
if ((Environment.OSVersion.Version.CompareTo(ConfigurationOptions.RS2Version) >= 0) &&
(IsExpectedConfigValue(ConfigurationStringConstants.DisableDpiChangedMessageHandlingKeyName, false)) &&
(IsDpiAwarenessValueSet()) &&
// The dynamic scaling features are implemented only in comclt32 v6, no point to
// activate it otherwise.
(Application.RenderWithVisualStyles))
{
// user had not opted out from dynamic scaling level changes but the primary screen DPI might be 96
enableDpiChangedMessageHandling = true;
}
// IsScalingRequired returns true if the current resolution is not 96DPI on the primary monitor.
// However PerMonitor DPI aware applicaitons need dynamic scaling initialized properly even if the
// the current DPI is 96 because they handle DPI change.
if ((DpiHelper.IsScalingRequired || enableDpiChangedMessageHandling) && IsDpiAwarenessValueSet())
{
if (IsExpectedConfigValue(ConfigurationStringConstants.CheckedListBoxDisableHighDpiImprovementsKeyName, false))
{
enableCheckedListBoxHighDpiImprovements = true;
}
if (IsExpectedConfigValue(ConfigurationStringConstants.ToolStripDisableHighDpiImprovementsKeyName, false))
{
enableToolStripHighDpiImprovements = true;
}
if (IsExpectedConfigValue(ConfigurationStringConstants.FormDisableSinglePassScalingOfDpiFormsKeyName, false))
{
enableSinglePassScalingOfDpiForms = true;
}
if (IsExpectedConfigValue(ConfigurationStringConstants.DataGridViewControlDisableHighDpiImprovements, false))
{
enableDataGridViewControlHighDpiImprovements = true;
}
if (IsExpectedConfigValue(ConfigurationStringConstants.AnchorLayoutDisableHighDpiImprovementsKeyName, false))
{
enableAnchorLayoutHighDpiImprovements = true;
}
if (IsExpectedConfigValue(ConfigurationStringConstants.MonthCalendarDisableHighDpiImprovementsKeyName, false))
{
enableMonthCalendarHighDpiImprovements = true;
}
if (ConfigurationOptions.GetConfigSettingValue(ConfigurationStringConstants.DisableDpiChangedHighDpiImprovementsKeyName) == null)
{
if (ConfigurationOptions.NetFrameworkVersion.CompareTo(dpiChangedMessageHighDpiImprovementsMinimumFrameworkVersion) >= 0)
{
enableDpiChangedHighDpiImprovements = true;
}
}
else
{
if (IsExpectedConfigValue(ConfigurationStringConstants.DisableDpiChangedHighDpiImprovementsKeyName, false))
{
enableDpiChangedHighDpiImprovements = true;
}
}
// no opt-out switch at the moment
enableThreadExceptionDialogHighDpiImprovements = true;
}
}
catch
{
}
isDpiHelperQuirksInitialized = true;
}