VC6下实现透明对话框！

今天突然要用到透明对话框，所以搜索了一下找到了实现的办法如下：

 

创建一个对话框并在其对话框的OnInitDialog消息响应中进行初始化

所需要包含的库是User32.DLL头文件是Winuser.h

其中如果要设置透明对话框要用到的函数是SetLayeredWindowAttributes()

且必须将窗口样式中添加WS_EX_LAYERED类型其值为0x80000

LWA_COLORKEY 0x01

LWA_ALPHA值为0x02

BOOL CTooldlg::OnInitDialog()

{

       CDialog::OnInitDialog();

      

       // TODO: Add extra initialization here

       SetWindowLong(this->GetSafeHwnd(), GWL_EXSTYLE,

              GetWindowLong(this->GetSafeHwnd(), GWL_EXSTYLE) | 0x80000);

       HINSTANCE hInst = LoadLibrary("User32.DLL");

 

       if(hInst)

       {

              typedef BOOL (WINAPI *MYFUNC)(HWND, COLORREF, BYTE, DWORD);

              MYFUNC fun = NULL;

              //取得SetLayeredWindowAttributes函数指针

              fun=(MYFUNC)GetProcAddress(hInst, "SetLayeredWindowAttributes");

 

              if(fun)

                     fun(this->GetSafeHwnd(), 0, 180, 2);

 

              FreeLibrary(hInst);

       }

      

       return TRUE;  // return TRUE unless you set the focus to a control

                     // EXCEPTION: OCX Property Pages should return FALSE

}