public bool capDriverGetCaps(IntPtr hwnd, ref CAPDRIVERCAPS capDriverCaps, int sizeOfCapDriverCapsIs44Bytes)
{
if (true == IsWindow(hwnd))
{
int sizeOfCAPDRIVERCAPSInBytes = 44;
if (IntPtr.Zero == mPersistingUnmanagedMemoryForCapDriverCapsResult)
{
mPersistingUnmanagedMemoryForCapDriverCapsResult =
System.Runtime.InteropServices.Marshal.AllocHGlobal(sizeOfCAPDRIVERCAPSInBytes);
}
int result = 0;
result = SendMessage(hwnd, WM_CAP_DRIVER_GET_CAPS, sizeOfCAPDRIVERCAPSInBytes, mPersistingUnmanagedMemoryForCapDriverCapsResult.ToInt32( ));
if (0 == result)
{
return(false);
}
// Copy the raw byte data to a CAPDRIVERCAPS structure
if (IntPtr.Zero != mPersistingUnmanagedMemoryForCapDriverCapsResult)
{
System.Runtime.InteropServices.Marshal.PtrToStructure
(
mPersistingUnmanagedMemoryForCapDriverCapsResult,
(object)capDriverCaps
);
}
return(true);
}
return(false);
}
public static extern bool SendMessage(IntPtr hWnd, int wMsg, int wParam, ref CAPDRIVERCAPS lParam);
public static extern bool SendMessage(IntPtr hWnd, int wMsg, int wParam, ref CAPDRIVERCAPS lParam);
public static bool capDriverGetCaps(IntPtr lwnd, ref CAPDRIVERCAPS psCaps, int wSize)
{
return SendMessage(lwnd, WM_CAP_DRIVER_GET_CAPS, wSize, ref psCaps);
}
