unit2.cpp

来自「本书《C++Builder与WindowsAPI经典范例》附含配套光盘包括132」· C++ 代码 · 共 27 行

//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop

#include "Unit2.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
///-关闭屏幕保护程序callback函数----------------------------------------------
BOOL __stdcall CALLBACK KillScreenSaverFunc(HWND, long);
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
HDESK hdesk;
//若屏幕保护程序可运行，则对之送出关闭信息
hdesk = ::OpenDesktop("Screen-Saver",
                      DF_ALLOWOTHERACCOUNTHOOK,
                      false,
                      DESKTOP_READOBJECTS | DESKTOP_WRITEOBJECTS);
if(hdesk)
  {//在另一桌面中搜寻屏幕保护程序，并由callback函数送出关闭程序信息