在U盘上运行a.exe(以下为它的代码),在b.exe没有退出的进候,可以删除U盘上的a.exe, 但不能停用U盘,当b.exe退出的时候可以停用U盘。请问如何实现在不退出b.exe的情况下停用U盘。#include <shellapi.h>int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
ShellExecute(NULL, NULL, "c:\\b.exe", "aa", NULL, SW_SHOWNORMAL);
return 1;
}
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
ShellExecute(NULL, NULL, "c:\\b.exe", "aa", NULL, SW_SHOWNORMAL);
return 1;
}
LPCTSTR lpOperation,
LPCTSTR lpFile,
LPCTSTR lpParameters,
LPCTSTR lpDirectory,
INT nShowCmd
);lpParameters
[in] If the lpFile parameter specifies an executable file, lpParameters is a pointer to a null-terminated string that specifies the parameters to be passed to the application. The format of this string is determined by the verb that is to be invoked. If lpFile specifies a document file, lpParameters should be NULL.参数“aa”有什么作用?!
改为null试试。