C#中如何捕捉任意时间和位置的鼠标单击事件？

放一个ApplicationEvents控件(在additional上)

procedure TForm1.ApplicationEvents1Message(var Msg: tagMSG;
var Handled: Boolean);
begin
if Msg.message=WM_RBUTTONDOWN then
Showmessage('Right button down');
end;

或者可以通过系统API 调用windows消息，检测消息是否为鼠标单击事件
模块：
Option Explicit
Declare Function SetWindowsHookEx Lib "user32" Alias "SetWindowsHookExA" (ByVal idHook As Long, ByVal lpfn As Long, ByVal hmod As Long, ByVal dwThreadId As Long) As Long
Declare Function UnhookWindowsHookEx Lib "user32" (ByVal hHook As Long) As Long
Declare Function CallNextHookEx Lib "user32" (ByVal hHook As Long, ByVal nCode As Long, ByVal wParam As Long, lparam As Any) As Long
Public Const HC_ACTION = 0
Public Const WH_MOUSE_LL As Long = 14
Public Const WM_LBUTTONDOWN = &H201
Public Const WM_LBUTTONUP = &H202
Private Type POINTAPI
X As Long
Y As Long
End Type
Private Declare Function GetCursorPos Lib "user32" (lpPoint As POINTAPI) As Long
Public hHook As Long

Public Sub EnableHook()
If hHook = 0 Then
hHook = SetWindowsHookEx(WH_MOUSE_LL, AddressOf HookProc, App.hInstance, 0)
End If
End Sub
Public Sub FreeHook()
If hHook <> 0 Then
Call UnhookWindowsHookEx(hHook)
hHook = 0
End If
End Sub

Public Function HookProc(ByVal nCode As Long, ByVal wParam As Long, ByVal lparam As Long) As Long
If nCode < 0 Then
HookProc = CallNextHookEx(hHook, nCode, wParam, lparam)
Exit Function
End If
If wParam = WM_LBUTTONDOWN Then
Dim PT As POINTAPI
GetCursorPos PT
Form1.Caption = "mouse click at " + CStr(PT.X) + "," + CStr(PT.Y)
End If
HookProc = 0 '令待完成的动作继续完成，若为1，则取消原本要完成的动作
End Function

窗体（form1）：
Option Explicit
Const HWND_TOPMOST = -1
Const HWND_NOTOPMOST = -2
Const SWP_NOSIZE = &H1
Const SWP_NOMOVE = &H2
Const SWP_NOACTIVATE = &H10
Const SWP_SHOWWINDOW = &H40
Private Declare Sub SetWindowPos Lib "user32" (ByVal hWnd As Long, ByVal hWndInsertAfter As Long, ByVal X As Long, ByVal Y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long)

Private Sub Form_Activate()
SetWindowPos Me.hWnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOACTIVATE Or SWP_SHOWWINDOW Or SWP_NOMOVE Or SWP_NOSIZE
End Sub
Private Sub Form_Load()
EnableHook
End Sub

Private Sub Form_Unload(Cancel As Integer)
FreeHook
End Sub

简单解释一下，用的是WH_MOUSE_LL钩子，这个全局钩子比较特殊，它特殊在不需要dll，其它的就没什么可说的了，和处理其它的钩子没什么区别
定时器不是很合适，会有漏判。全局钩子可以，但机器必须是2000或XP系统。

有这个事件把，叫什么presskey_mouse好像是的，记的不太清楚了，你到vs中看看

windows
程序是可以的
web程序
可能C#不能解决
要用js