public static SafeDC CreateCompatibleDC(SafeDC hdc)
{
SafeDC safeDC = null;
try
{
IntPtr hdc2 = IntPtr.Zero;
if (hdc != null)
{
hdc2 = hdc.handle;
}
safeDC = SafeDC.NativeMethods.CreateCompatibleDC(hdc2);
if (safeDC == null)
{
HRESULT.ThrowLastError();
}
}
finally
{
if (safeDC != null)
{
safeDC._created = true;
}
}
if (safeDC.IsInvalid)
{
safeDC.Dispose();
throw new SystemException("Unable to create a device context from the specified device information.");
}
return(safeDC);
}
public static SafeDC CreateDC(string deviceName)
{
SafeDC dc = null;
try
{
// Should this really be on the driver parameter?
dc = NativeMethods.CreateDC(deviceName, null, IntPtr.Zero, IntPtr.Zero);
}
finally
{
if (dc != null)
{
dc._created = true;
}
}
if (dc.IsInvalid)
{
dc.Dispose();
throw new SystemException("Unable to create a device context from the specified device information.");
}
return(dc);
}
public static SafeDC CreateDC(string deviceName)
{
SafeDC safeDC = null;
try
{
safeDC = SafeDC.NativeMethods.CreateDC(deviceName, null, IntPtr.Zero, IntPtr.Zero);
}
finally
{
if (safeDC != null)
{
safeDC._created = true;
}
}
if (safeDC.IsInvalid)
{
safeDC.Dispose();
throw new SystemException("Unable to create a device context from the specified device information.");
}
return(safeDC);
}
