Method WindowsHook.ThreadCallWndProcRet

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Overload

Sets a WH_CALLWNDPROCRET hook for a thread of this process. See API SetWindowsHookEx.

public static WindowsHook ThreadCallWndProcRet(Action<HookData.ThreadCallWndProcRet> hookProc, int threadId = 0, bool setNow = true)

Parameters

hookProc  (Action<HookData.ThreadCallWndProcRet>) The hook procedure (function that handles hook events). Must return as soon as possible. The event cannot be canceled or modified. note When the hook procedure returns, the pointer field of the parameter variable becomes invalid and unsafe to use.

threadId  (int) Native thread id, or 0 for this thread. The thread must belong to this process.

setNow  (bool) Set hook now. Default true.

Returns

WindowsHook A new WindowsHook object that manages the hook.

Exceptions

AuException Failed.

Examples

using var hook = WindowsHook.ThreadCallWndProc(x => {
	ref var m = ref *x.msg;
	WndUtil.PrintMsg(out var s, m.hwnd, m.message, m.wParam, m.lParam);
	print.it(s, x.sentByOtherThread);
});
dialog.show("hook");