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vc 6.0创徏和链接DLL

Sun, 30 Jul 2006 10:33:00 GMT

参照�?ji��n)�?strong>梦在天��(d��ng)“的Blog做了(ji��n)下面�q�个Test例子�Q?br />-------------------------------------------------------------------------------------
用Win32 Dynamic-Link Library 创徏 Non-MFC DLL 动态链接库
��试用例->
�Ҏ(gu��)��一�Q?br />Test_NonMFCDLL.h�Q?br />extern "C" _declspec(dllexport) double Add(double a, double b);
extern "C" _declspec(dllexport) double Mult(double a, double b);

Test_NonMFCDLL.cpp�Q?br />#include"Test_NonMFCDLL.h"
double Add(double a, double b)
{
       return (a+b);
}
double Mult(double a, double b)
{
       return (a*b);
}
�~�译成功后生�?/font>Test_NonMFCDLL.dll,Test_NonMFCDLL.lib

�Ҏ(gu��)��二：(x��)
删除上个例子工程中的Test_NonMFCDLL.h文�g�Q�新建文本文�?font face="Verdana">Test_NonMFCDLL.def
LIBRARY Test_NonMFCDLL
EXPORTS
Add  @1     //中间要有个空�?br />Mult @2

现在��测试一下你所写的dll,先将Test_NonMFCDLL.dll,Test_NonMFCDLL.lib拯��到当前工�E�所在的目录下面
1.隐式链接
UseDLL.h�Q?br /> #pragma comment(lib,"Test_NonMFCDLL.lib")
extern "C"_declspec(dllimport) double Add(double a,double b);
extern "C"_declspec(dllimport) double Mult(double a,double b);

UseDLL.cpp:
#include"TestUseDLL.h"
#include
void main()
{
    double res=Add(1.0,2.0);
    printf("%f\n",res);
}

2 .昑ּ�链接
UseDLL.cpp:
#include
#include
void main(void)
{
    typedef double (*p)    (double a,double b);
    p Add;
    HINSTANCE hDLL;
    hDLL=LoadLibrary("Test_NonMFCDLL.dll");// 加蝲动态链接库dll 文�g�Q��?br />    Add=(p)GetProcAddress(hDLL,"Add");
    /*或��用GetProcAddress(hDLL,MAKEINTRESOURCE(1)) �Q�看上面的Add  @1*/
    double res=Add(1.0,2.0);
    printf("%f\n",res);
    FreeLibrary(hDLL);// 卸蝲dll 文�g�Q?
}

dbsky 2006-07-30 18:33 发表评论

[转蝲] -> 寚w��盘、鼠标、显�C�器、桌面操作小�l?

Mon, 03 Jul 2006 11:36:00 GMT

一键盘
1.1 Disabling Low-level Keys

#define _WIN32_WINNT 0x0400
#include
LRESULT CALLBACK LowLevelKeyboardProc(int nCode,
           WPARAM wParam, LPARAM lParam)
{
BOOL fEatKeystroke = FALSE;

if (nCode == HC_ACTION) {
switch (wParam) {
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
case WM_KEYUP:
case WM_SYSKEYUP:
   PKBDLLHOOKSTRUCT p = (PKBDLLHOOKSTRUCT) lParam;
   fEatKeystroke =
    ((p->vkCode == VK_TAB)    && ((p->flags & LLKHF_ALTDOWN) != 0)) ||
    ((p->vkCode == VK_ESCAPE) && ((p->flags & LLKHF_ALTDOWN) != 0)) ||
    ((p->vkCode == VK_ESCAPE) && ((GetKeyState(VK_CONTROL)&0x8000) != 0))||
    ( p->vkCode == VK_LWIN)   || ( p->vkCode==VK_RWIN )
    ;
   break;
}
}
return(fEatKeystroke ? 1 : CallNextHookEx(NULL, nCode, wParam,
lParam));
}

int WINAPI WinMain(HINSTANCE hinstExe, HINSTANCE, PTSTR pszCmdLine, int)
{

        // Install the low-level keyboard & mouse hooks
        HHOOK hhkLowLevelKybd = SetWindowsHookEx(WH_KEYBOARD_LL,
        LowLevelKeyboardProc, hinstExe, 0);

       // Keep this app running until we're told to stop
         MessageBox(NULL,
             TEXT("Alt+Esc, Ctrl+Esc, Alt+Tab, LWIN and RWIN are now disabled.\n")
          TEXT("Click \"Ok\" to terminate this application and re-enable these keys."),
                TEXT("Disable Low-Level Keys"),
                MB_OK);

             UnhookWindowsHookEx(hhkLowLevelKybd);
             return(0);
}

1.2 �pȝ��热键
1.屏蔽:SystemParametersInfo(SPI_SETSCREENSAVERRUNNING,true�Q?, SPIF_UPDATEINIFILE);
2.恢复:SystemParametersInfo(SPI_SETSCREENSAVERRUNNING,false, 0, SPIF_UPDATEINIFILE);

1.3 模拟按键
让系�l�模拟一�ơ按下WIN+D键�?

               keybd_event(VK_LWIN,0,0,0);
               keybd_event('D',0,0,0);
               keybd_event(VK_LWIN,0,KEYEVENTF_KEYUP,0);
               keybd_event('D',0,KEYEVENTF_KEYUP,0);

1.4 切换到当前桌�?/p>

模拟最��化屏幕快捷键Window+D

                             keybd_event(VK_LWIN,0,0,0);
                             keybd_event('D',0,0,0);
                             keybd_event(VK_LWIN,0,KEYEVENTF_KEYUP,0);
                             keybd_event('D',0,KEYEVENTF_KEYUP,0);
---------------------------------------------------------------

正统的办法如下：(x��)

#include
#include

int main ()
       {
               CoInitialize (0);
               IShellDispatch4 *pdisp = NULL;
               CoCreateInstance (CLSID_Shell, NULL, CLSCTX_ALL, __uuidof (IShellDispatch4), (void **)&pdisp);
               pdisp->ToggleDesktop (); // �q�句是用来切换桌面的
               pdisp->Release ();
               CoUninitialize ();
       };

1.5 调出��x��选择画面

////////调出��x��选择画面�Q�（重启、关机、休眠、待机）(j��)
typedef int (CALLBACK *SHUTDOWNDLG)(int); //昄��x��对话框函数的指针
HINSTANCE hInst = LoadLibrary("shell32.dll"); //装入shell32.dll
SHUTDOWNDLG ShutDownDialog; //指向shell32.dll库中昄��x��对话框函数的指针
if(hInst != NULL)
{
       //获得函数的地址�q�调用之
       ShutDownDialog = (SHUTDOWNDLG)GetProcAddress(hInst,(LPSTR)60);
       (*ShutDownDialog)(0);
}

�?鼠标

2.1 ::ClipCursor(&rect);
::ClipCursor(NULL);

2.2 一个未公开的API函数BlockInput�Q�在user32.dll中，用它可以
��L��的锁定键盘和鼠标�?/p>

BOOL __stdcall (*BlockInput)(BOOL Flag);
(FARPROC)BlockInput = GetProcAddress(GetModuleHandle(
"user32.dll"), "BlockInput");
if (BlockInput) BlockInput(TRUE); //�q�样��可以了(ji��n)

�?昄��?/p>

3.1 关闭昄��?br /> 1. SendMessage( WM_SYSCOMMAND, SC_MONITORPOWER, 2);//��x��C�器
SendMessage( WM_SYSCOMMAND, SC_SCREENSAVE, 0);//�q�行屏保

        2. ::SendMessage(GetSafeHwnd(), WM_SYSCOMMAND, SC_MONITORPOWER, 2);

        3. SendMessage(HWND_BROADCAST,WM_SYSCOMMAND,SC_MONITORPOWER,2);
   3.2 启动屏保
         PostMessage(WM_SYSCOMMAND,SC_SCREENSAVE,0);

�?�pȝ��桌面

4.1 隐藏��d��?
       隐藏 ::ShowWindow (::FindWindow("Shell_TrayWnd",NULL),SW_HIDE);
            or ::ShowWindow (::FindWindow("Shell_TrayWnd",NULL),SW_HIDE);
       昄�� ::ShowWindow (::FindWindow("Shell_TrayWnd",NULL),SW_SHOW);
            or ::ShowWindow (::FindWindow("Shell_TrayWnd",NULL),SW_SHOW);

4.2 在�Q务栏隐藏
SetWindowLong(Application,Handle,GWL_EXSTYLE,WS_EX_TOOLWINDOW);

4.3在�Q务管理器中隐�?br />//定义RegisterServiceProcess函数的原�?
typedef DWORD (CALLBACK* LPREGISTERSERVICEPROCESS)(DWORD,DWORD);

//注册应用�E�序的进�E?
//其中i = 0�Q�将�q�程注册成非服务�q�程�Q�这��P��在Windows的关闭程序窗口中��׃��?x��)出现应用程�?
//的名�U�C��(ji��n)�?
// i = 1�Q�将�q�程注册成服务进�E�，�q�是一般应用程序运行时所采用的状态�?

void RegisterProcess(int i)
{
HINSTANCE hDLL;
LPREGISTERSERVICEPROCESS lpRegisterServiceProcess;

//加蝲RegisterServiceProcess函数所在的链接�?
hDLL = LoadLibrary("KERNEL32");

//得到RegisterServiceProcess函数的地址
lpRegisterServiceProcess = (LPREGISTERSERVICEPROCESS)GetProcAddress(hDLL, "RegisterServiceProcess");

//执行RegisterServiceProcess函数
lpRegisterServiceProcess(GetCurrentProcessId(),i);

//卸蝲链接�?
FreeLibrary(hDLL);
}

4.4启动屏保

SystemParametersInfo(SPI_SETDESKWALLPAPER,0,"C:\\*.BMP",WM_WININICHANGE);

dbsky 2006-07-03 19:36 发表评论

Mon, 03 Jul 2006 11:21:00 GMT

学习(f��n)�?ji��n)一个星期的SDK�Q�下面是做的点笔�?br />
消息宏前�~��Q?br />WM_:�H�口消息
BM_:按钮控制消息
CB_:�l�合框控制消�?br />EM_:�~�辑框控制消�?br />LB_:列表框控制消�?br />SBM_:滚动条控制消�?/p>

一个句柄标识一个Windows使用的唯一整数数��|��用来标识应用�E�序中不同对象和同类对象中的不同的实例，应用�E�序通过句柄来访问相应的对象信息
HWND �H�口句柄
HDC   讑֤�环境句柄
HINSTANCE   当前实例句柄
HBITMAP   位图句柄
HCURSOR   光标句柄
HICON     图标句柄
HFONT     字体句柄
HBRUSH    �W�刷句柄
HMENU     菜单句柄
HFILE     文�g句柄

SDK常用的数据结构：(x��)
MSG:包含一个消息的全部信息
WNDCLASS�Q�包含窗口类的全部信�?br /> RECT:矩�Ş区域
PAINTSTRUCT:为每一个窗口保存一�?�l�图信息�l�构"
TEXTMETRIC :字体�l�构

InvalidateRect和UpdateWindow的区�?

InvalidateRect是将客户区标��Cؓ(f��)无效�Q��ƈ产生WM_PAINT消息�Q�W(xu��)indows�?x��)将WM_PAINT消息攑օ�队列�Q�等待窗口过�E�的处理�Q�然后操作系�l�将WM_PAINT当作是低优先�U�消息，如果后面有其他的动作要处理，则可能会(x��)出现�I�白的区域需要等待一�D�|��间才被刷新�?br />UpdateWindow则将��D��操作�pȝ��立即用WM_PAINT调用�H�口�q�程�Q�而不�q�入队列�Q��ɽH�口得到立即的刷新。窗口过�E�完成刷新后立即退出，W(xu��)indows��控制返回给UpdateWindow之后的语句�?/

if(!TranslateAccelerator(hwnd,hAccel,&msg))
在消息��@环中�Q�截获加速键消息TranslateAccelerator��L��W(w��ng)M_KEYDOWN�Q�W(xu��)M_CHAR�Q�W(xu��)M_KEYUP序列与表中键值匹配的字符�Q�如果找刎ͼ�它插入一条WM_COMMAND到消息队列，在消息队列中的命令ID可以是加速键表定义的��M��入口

PostQuitMessage函数投递一个WM_QUIT消息到线�E�消息队列�ƈ且立卌��?该函数简单的通知�pȝ��U�程��h��马上退�?当线�E�从它的消息队列收到WM_QUIT消息�?��退�?gu��)��w�消息��@环�ƈ且交�q�控制给操作�pȝ��.WM_QUIT消息的wParam参数作�ؓ(f��)�E�序退出码�q�回�l�系�l�处�?

PtInRect(&rect, point)//判断�Ҏ(gu��)��否在矩�Ş�?br />wsprintf(char szTitle[],"%d",i)//把输出格式和输出变量送到szTitle数组

dbsky 2006-07-03 19:21 发表评论