private static void EnsureSystemMetrics()
{
if (SystemBitDepth == 0)
{
var hdcDesktop = new HandleRef(null, InteropMethods.GetDC(new HandleRef()));
try
{
var sysBitDepth = InteropMethods.GetDeviceCaps(hdcDesktop, InteropValues.BITSPIXEL);
sysBitDepth *= InteropMethods.GetDeviceCaps(hdcDesktop, InteropValues.PLANES);
if (sysBitDepth == 8)
{
sysBitDepth = 4;
}
var cxSmallIcon = InteropMethods.GetSystemMetrics(InteropValues.SM.CXSMICON);
var cySmallIcon = InteropMethods.GetSystemMetrics(InteropValues.SM.CYSMICON);
var cxIcon = InteropMethods.GetSystemMetrics(InteropValues.SM.CXICON);
var cyIcon = InteropMethods.GetSystemMetrics(InteropValues.SM.CYICON);
SmallIconSize = new Size(cxSmallIcon, cySmallIcon);
IconSize = new Size(cxIcon, cyIcon);
SystemBitDepth = sysBitDepth;
}
finally
{
InteropMethods.ReleaseDC(new HandleRef(), hdcDesktop);
}
}
}