一个困扰我几天的问题 Delphi / Windows SDK/APIhttp://www.delphi2007.net/DelphiAPI/html/delphi_20061128134457154.html
郁闷啊！下面这段代码是dll中的键盘钩子的回调函数，想在这个回调函数中打开
dll中的窗体！但是现在连编译都过不了。
这是drhook 工程文件：
library drHook;
{ Important note about DLL memory management: ShareMem must be the
first unit in your library's USES clause AND your project's (select
Project-View Source) USES clause if your DLL exports any procedures or
functions that pass strings as parameters or function results. This
applies to all strings passed to and from your DLL--even those that
are nested in records and classes. ShareMem is the interface unit to
the BORLNDMM.DLL shared memory manager, which must be deployed along
with your DLL. To avoid using BORLNDMM.DLL, pass string information
using PChar or ShortString parameters. }
uses
SysUtils,
Classes,
Forms,
Unit2 in 'Unit2.pas',
Unit1 in 'Unit1.pas' {Form1};
{$R *.res}
exports
CreateKeyboardHook,
DestroyKeyboardHook;
begin
hNextHookProc := 0;
procSaveExit := ExitProc;
ExitProc := @KeyboardHookExit;
end.
这是dll中的键盘钩子：
unit Unit2;
interface
uses
Windows, SysUtils;
var
hNextHookProc: HHook;
procSaveExit: Pointer;
function KeyboardHookProc(code: Integer; wparam: WPARAM;
lparam: LPARAM): LRESULT stdcall; export;
function CreateKeyboardHook: BOOL; stdcall; export;
function DestroyKeyboardHook: BOOL; stdcall; export;
procedure KeyboardHookExit;
implementation
var
GameSwitch: Word; //程序热键
function KeyboardHookProc(code: Integer; wparam: WPARAM;
lparam: LPARAM): LRESULT;
const
_KeyProcessMask = $80000000;
begin
Result := 0;
if code < 0 then
begin
Result := Windows.CallNextHookEx(hNextHookProc, code, wparam, lparam);
Exit;
end;
if ((lparam and _KeyProcessMask) = 0) and (wparam = GameSwitch) then
begin
Application.Handle := GetForegroundWindow; //返回当前窗口句柄
Result := 1;
end;
end;
function CreateKeyboardHook: BOOL;
begin
Result := false;
if hNextHookProc <> 0 then
exit;
hNextHookProc := Windows.SetWindowsHookEx(WH_KEYBOARD, @KeyboardHookProc,
hInstance, 0);
Result := hNextHookProc <> 0;
end;
function DestroyKeyboardHook: BOOL;
begin
if hNextHookProc <> 0 then
begin
Windows.UnhookWindowsHookEx(hNextHookProc);
hNextHookProc := 0;
end;
Result := hNextHookProc = 0;
end;
procedure KeyboardHookExit;
begin
if hNextHookProc <> 0 then
DestroyKeyboardHook;
ExitProc := procSaveExit;
end;
Initialization
GameSwitch := VK_HOME;
end.
这是那个窗体文件，啥都没有，就一个空窗体，我就想让他显示。。。
困扰好久了。。。。比较菜
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs;
type
TForm1 = class(TForm)
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
end.
希望那位大哥能指点指点，小弟先谢谢了。。。。
uses
Windows, SysUtils, Forms; // add Forms
Application声明在Forms单元中，难道你没有看帮助？
zswang(伴水清清) 谢谢你！
我知道这点，但是加上forms后 那个窗体就调不出来了。。。
好郁闷。。