public static IntPtr GetSize <KeyType>(IHasInfo <KeyType> obj, KeyType param_name)
{
IntPtr result = IntPtr.Zero;
unsafe {
Native.Call(obj.GetInfo(param_name, (IntPtr)0, IntPtr.Zero, &result));
}
return(result);
}
public static ImageFormat Get_ImageFormat <KeyType>(IHasInfo <KeyType> obj, KeyType param_name)
{
ImageFormat result = new ImageFormat();
unsafe {
Native.Call(obj.GetInfo(param_name, (IntPtr)sizeof(ImageFormat), (IntPtr)(&result), null));
}
return(result);
}
public static ulong Get_ulong <KeyType>(IHasInfo <KeyType> obj, KeyType param_name)
{
ulong result = 0;
unsafe {
Native.Call(obj.GetInfo(param_name, (IntPtr)sizeof(ulong), (IntPtr)(&result), null));
}
return(result);
}
public static int Get_int <KeyType>(IHasInfo <KeyType> obj, KeyType param_name)
{
int result = 0;
unsafe {
Native.Call(obj.GetInfo(param_name, (IntPtr)sizeof(int), (IntPtr)(&result), null));
}
return(result);
}
public static IntPtr Get_IntPtr <KeyType>(IHasInfo <KeyType> obj, KeyType param_name)
{
IntPtr result = IntPtr.Zero;
unsafe {
Native.Call(obj.GetInfo(param_name, (IntPtr)sizeof(IntPtr), (IntPtr)(&result), null));
}
return(result);
}
public static uint[] Get_uintArray <KeyType>(IHasInfo <KeyType> obj, KeyType param_name)
{
unsafe {
IntPtr size = GetSize(obj, param_name);
uint count = (uint)size / sizeof(uint);
uint[] result = new uint[count];
fixed(uint *p_result = result)
{
Native.Call(obj.GetInfo(param_name, size, (IntPtr)p_result, null));
}
return(result);
}
}
public static string Get_string <KeyType>(IHasInfo <KeyType> obj, KeyType param_name)
{
string result = null;
unsafe {
IntPtr size = GetSize(obj, param_name);
IntPtr strBuf = Marshal.AllocHGlobal((int)size + 1); //leave room for a null terminator
try{
Native.Call(obj.GetInfo(param_name, size, strBuf, null));
((byte *)strBuf)[(int)size] = 0; //make sure the string is null terminated
result = Marshal.PtrToStringAnsi(strBuf);
}
finally{
Marshal.FreeHGlobal(strBuf);
}
}
return(result);
}