虚拟一个桌面，然后在虚拟桌面启动explorer进程，用户可以用"ALT+Q"来切换现有桌面与这个虚拟桌面，用户需要运行什么软件，自己在虚拟桌面打开就是了。原理很简单，实现同样也很简单，下面是代码：
#include<afxwin.h>
HINSTANCE hInst; //当前实例
TCHAR szAppName[] = TEXT ("VirtualDesk") ; //程序名称
HWND hwnd ; //主窗体句柄
HDESK hVirtualDesk; //虚拟桌面句柄
HDESK hCurrent; //当前桌面句柄
PROCESS_INFORMATION piExplor; //Explorer进程的PROCESS_INFORMATION结构
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM);
//每次运行首先检测注册表相关项，如果未发现，则设置开机自动运行
void SetStartup(HINSTANCE hInst)
{
HKEY hKey;
DWORD DataType = REG_SZ;
PCSTR data_run = "Software\Microsoft\Windows\CurrentVersion\Run";
long ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE,data_run,0,KEY_ALL_ACCESS,&hKey);
if(ret != ERROR_SUCCESS)
{
MessageBox(NULL,"无法打开注册表键","Error",0);
return;
}
CString ProcessName;
int len = GetModuleFileName(hInst,ProcessName.GetBuffer(256),256);
if(len == 0)
{
MessageBox(NULL,"无法获取进程的当前目录","Error",0);
return;
}
ProcessName.ReleaseBuffer(len);
DWORD direcLen = ProcessName.GetLength() + 1;
LPBYTE direc = new BYTE[direcLen];
ZeroMemory(direc,direcLen);
ret = RegQueryValueEx(hKey,"VirtualDesk",0,0,direc,&direcLen);
//如果键不存在或者键长度与目前的值长度不匹配则添加新键
if((ret != ERROR_SUCCESS )|| (direcLen != ProcessName.GetLength()+1))
{
SetValue:
DWORD KeyLength = ProcessName.GetLength() + 1;
LPBYTE KeyValue = new BYTE[KeyLength];
ZeroMemory(KeyValue,KeyLength);
for(int i=0;i<ProcessName.GetLength();i++)
KeyValue[i] = ProcessName[i];
KeyValue[ProcessName.GetLength()] = 0;
ret = RegSetValueEx(hKey,"VirtualDesk",0,REG_SZ,KeyValue,KeyLength);
delete []KeyValue;
}
else
{
//如果键的内容与当前值不匹配同样进行更改
for(int i=0;i<ProcessName.GetLength();i++)
{
if(direc[i] != ProcessName[i])
goto SetValue;
}
}
delete []direc;
return;
}
//创建explorer进程的函数，如果创建了一个虚拟桌面，那么最好调用该函数。
责任编辑：小草
