internal static extern GpStatus GdipGetPropertyItemSize(GpImage image, PROPID propId, out uint size);
internal static extern GpStatus GdipGetPropertyIdList(GpImage image, uint numOfProperty, PROPID[] list);
GdipGetPropertyItemSize(GpImage image, PROPID propId, out uint size);
public object GetValue()
{
object result = null;
PROPID propid = this.vt;
if (propid <= PROPID.VT_LPWSTR)
{
switch (propid)
{
case PROPID.VT_I2:
result = this.iVal;
break;
case PROPID.VT_I4:
result = this.lVal;
break;
case PROPID.VT_R4:
result = this.fltVal;
break;
case PROPID.VT_R8:
result = this.dblVal;
break;
case PROPID.VT_CY:
case PROPID.VT_DATE:
case PROPID.VT_BSTR:
case PROPID.VT_DISPATCH:
case PROPID.VT_VARIANT:
case PROPID.VT_DECIMAL:
case PROPID.VT_NULL | PROPID.VT_I2 | PROPID.VT_R4 | PROPID.VT_BSTR:
break;
case PROPID.VT_ERROR:
result = this.scode;
break;
case PROPID.VT_BOOL:
result = (0 != this.boolVal);
break;
case PROPID.VT_UNKNOWN:
result = Marshal.GetObjectForIUnknown(this.ptr);
break;
case PROPID.VT_I1:
result = this.cVal;
break;
case PROPID.VT_UI1:
result = this.bVal;
break;
case PROPID.VT_UI2:
result = this.uiVal;
break;
case PROPID.VT_UI4:
result = this.ulVal;
break;
case PROPID.VT_I8:
result = this.hVal;
break;
case PROPID.VT_UI8:
result = this.uhVal;
break;
default:
switch (propid)
{
case PROPID.VT_LPSTR:
result = Marshal.PtrToStringAnsi(this.ptr);
break;
case PROPID.VT_LPWSTR:
result = Marshal.PtrToStringUni(this.ptr);
break;
}
break;
}
}
else if (propid != PROPID.VT_FILETIME)
{
if (propid == PROPID.VT_CLSID)
{
result = Marshal.PtrToStructure(this.ptr, typeof(Guid));
}
}
else
{
result = PROPVARIANT.FileTimeStart.Add(new TimeSpan(this.filetime));
}
return(result);
}
GdipGetPropertyItemSize(GpImage image, PROPID propId, out uint size);
GdipGetPropertyIdList(GpImage image, uint numOfProperty, PROPID[] list);
