struct KEYBDINPUT {
public ushort wVk;
public ushort wScan;
public uint dwFlags;
public uint time;
public IntPtr dwExtraInfo;
}
<StructLayout(LayoutKind.Explicit)> _
Private Structure KEYBDINPUT
Public wVk As Short
Public wScan As Short
Public dwFlags As Integer
Public time As Integer
Public dwExtraInfo As IntPtr
End Structure
None.
Changed C# definition to use unsigned types (to match WORD and DWORD types). Also made members public.
Using C to dump out the offsets and sizes shows that the full size of an INPUT structure is
28 on x86 and 40 on x64.
The offsets of the KEYBDINPUT structure are (base 10):
x86 x64
000 000 vK
002 002 wScan
004 004 dwFlags
008 008 time
012 016 extraInfo
--- ---
016 024 Total Size of KEYBDINPUT
And remember, the offset of ki in INPUT is 4 on x86 and 8 on x64.
So, a flattened VB.Net declaration that works on both platforms...
<StructLayout(LayoutKind.Sequential, pack:=1)> _
Private Structure KeyInput
Public Type As IntPtr ' INPUT 0
Public Vk As Short ' KEYBDINPUT 0
Public Scan As Short
Public Flags As Integer
Public Time As IntPtr
Public ExtraInfo As IntPtr
Public Reserved As Int64
End Structure