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First changeset to make internal message loop non-global.

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soukoku
2014-05-24 18:39:07 -04:00
parent f69698f90a
commit 61b0e89313
11 changed files with 170 additions and 107 deletions
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40
NTwain/Internals/WindowsHook.cs
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@@ -13,10 +13,12 @@ namespace NTwain.Internals
class WindowsHook : IDisposable
{
IDisposable _win;
WndProcHook _hook;
IWinMessageFilter _filter;
public WindowsHook(WndProcHook hook)
public WindowsHook(IWinMessageFilter filter)
{
_filter = filter;
// hook into windows msg loop for old twain to post msgs.
// the style values are purely guesses here with
// CS_NOCLOSE, WS_DISABLED, and WS_EX_NOACTIVATE
@@ -27,7 +29,6 @@ namespace NTwain.Internals
Handle = win.Handle;
win.AddHook(WndProc);
_win = win;
_hook = hook;
}
catch
{
@@ -36,15 +37,12 @@ namespace NTwain.Internals
}
}
public delegate void WndProcHook(ref MESSAGE winMsg, ref bool handled);
private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
if (_hook != null)
if (_filter != null)
{
var winmsg = new MESSAGE(hwnd, msg, wParam, lParam);
_hook(ref winmsg, ref handled);
handled = _filter.IsTwainMessage(hwnd, msg, wParam, lParam);
}
return IntPtr.Zero;
}
@@ -52,32 +50,6 @@ namespace NTwain.Internals
public IntPtr Handle { get; private set; }
/// <summary>
/// The MSG structure in Windows for TWAIN use.
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public struct MESSAGE
{
public MESSAGE(IntPtr hwnd, int message, IntPtr wParam, IntPtr lParam)
{
_hwnd = hwnd;
_message = (uint)message;
_wParam = wParam;
_lParam = lParam;
_time = 0;
_x = 0;
_y = 0;
}
IntPtr _hwnd;
uint _message;
IntPtr _wParam;
IntPtr _lParam;
uint _time;
int _x;
int _y;
}
#region IDisposable Members
public void Dispose()