在应用程序中跟踪MOUSE的坐标

begin
end;
WM_NCMouseMove, WM_MOUSEMOVE:
begin
mydata(pmem^).data2:=pMOUSEHOOKSTRUCT(lparam)^;
// messagebeep(1);
//SendMessage(DataBuf(pMem^)[1],DataBuf(pMem^)[2],wParam,lParam );
SendMessage(mydata(pMem^).data1[1],mydata(pMem^).data1[2],wParam,integer(@(mydata(pmem^).data2)) );
end;
end; //发送消息
end; function OpenGetKeyHook(sender : HWND;MessageID : WORD) : BOOL; export;
begin
Result := False;
if NextHook $#@60;$#@62; 0 then Exit; //已经安装了本钩子
// DataBuf(pMem^)[1] := Sender; //填数据区
// DataBuf(pMem^)[2] := MessageID; //填数据区
mydata(pmem^).data1[1]:=sender;
mydata(pmem^).data1[2]:=messageid; NextHook := SetWindowsHookEx(WH_mouse, HookHandler, Hinstance, 0);
Result := NextHook $#@60;$#@62; 0;
end; function CloseGetKeyHook: BOOL; export;
begin
if NextHook $#@60;$#@62; 0 then
begin
UnhookWindowshookEx(NextHook); //把钩子链链接到下一个钩子处理上.
NextHook := 0;
end;
Result := NextHook = 0;
end; end.   第三步，测试DLL，建一PROJECT。关键在于override WndProc unit Unit1; interface uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls, ExtCtrls; type
TForm1 = class(Tform)
uncapture: Tbutton;
capture: Tbutton;
Exit: Tbutton;
Panel1: Tpanel;
show: Tlabel; Label1: Tlabel;
counter: Tlabel;
procedure ExitClick(Sender: Tobject);
procedure uncaptureClick(Sender: Tobject);
procedure captureClick(Sender: Tobject);
private
{ Private declarations }
public
{ Public declarations }
procedure WndProc(var Message: Tmessage); override;
end; var
Form1: TForm1;
var num : integer;
const MessageID = WM_User + 100;
implementation {$R *.DFM}
function OpenGetKeyHook(sender : HWND;MessageID : WORD) : BOOL; external GetKey.DLL;
function CloseGetKeyHook: BOOL; external GetKey.DLL; procedure TForm1.ExitClick(Sender: Tobject);
begin
close;
end; procedure TForm1.uncaptureClick(Sender: Tobject);
begin
if CloseGetKeyHook then //ShowMessage(结束记录...);
show.caption:=结束记录...;
end; procedure TForm1.captureClick(Sender: Tobject);
begin
// if OpenGetKeyHook(self.Handle,MessageID) then ShowMessage(开始记录...); if OpenGetKeyHook(Form1.Handle,MessageID) then
//ShowMessage(开始记录...);
show.caption:=开始记录...;
num := 0;
end; procedure TForm1.WndProc(var Message: Tmessage);
var x,y:integer;
begin
if Message.Msg = MessageID then
begin
// Panel1.Caption := IntToStr(Num);
x:=PMouseHookStruct( message.lparam)^.pt.x ;
y:=PMouseHookStruct( message.lparam)^.pt.y ; panel1.caption:=x=+inttostr(x)+ y=+inttostr(y);
inc(Num);
counter.Caption := IntToStr(Num);
end
else Inherited;
end; end.

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