[英]WinApi Thread (Pointer error)
我有一個問題:(我想制作一個程序,它給出一個隨機數:)我不想使用rand()函數:)我想為我做一個然后把它變成一個函數;)用於教育目的:)但我有一個問題:(看我的代碼:)
#include <stdio.h>
#include <iostream>
#include <conio.h>
#include <windows.h>
#define MIN 0
#define MAX 99999
using namespace std;
typedef struct _RANDOM_INFO{
DWORD random;
DWORD min;
DWORD max;
} RANDOM_INFO, * LPRANDOM_INFO;
void Error(LPSTR lpErrorMessage){
cout << lpErrorMessage << endl;
exit(EXIT_FAILURE);
}
void GetRandom(LPVOID lpParam){
DWORD dwListSize = 10000, min = 0, max = 99999;
LPDWORD lpRandom = (LPDWORD)lpParam;
LPSTR lpFileSelf, lpKernel, lpNtdll;
HMODULE hFileSelf = NULL, hKernel = NULL, hNtdll = NULL;
hFileSelf = (HMODULE) GetModuleHandle(NULL);
hKernel = (HMODULE) GetModuleHandle("kernel.dll");
hNtdll = (HMODULE) GetModuleHandle("ntdll.dll");
lpFileSelf = (LPSTR) hFileSelf;
lpKernel = (LPSTR) hKernel;
lpNtdll = (LPSTR) hNtdll;
while(1){
DWORD i;
for(i = 0; i <= dwListSize; i++){
*lpRandom = (DWORD)lpFileSelf[i];
}
i = 0;
}
return;
}
int main(int argc, char **argv)
{
DWORD random = 0;
DWORD getRandomThreadId = 0;
HANDLE hGetRandomThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)GetRandom, &random, 0, &getRandomThreadId);
if(hGetRandomThread == INVALID_HANDLE_VALUE)
Error("Cannot make a random list.");
getch();
cout << random << endl;
Sleep(1500);
return 0;
}
變量應該得到一個值,並打印它但我總是得到0和一個Windows錯誤有人可以告訴我為什么??? 當我嘗試在GetRandom函數中使用變量hKernel的另一個問題我也得到一個錯誤:(但它工作正常hFileSelf和hNtdll !!!!是內核保護讀取???
注意:這不是一個隨機數生成:)它只是一種從用戶點擊鍵盤上的輸入時從內存中獲取數字的方法:),並且它並不總是同時適用於所有用戶所以它並不總是在內存中相同的指針:)我希望你明白我想要做什么:)對不起我的壞englush :)只是幫我解決問題:)
感謝你 :)
您的GetRandom()
函數沒有CreateThread()
回調過程的正確簽名。 試試這個:
#include <stdio.h>
#include <iostream>
#include <conio.h>
#include <windows.h>
#define MIN 0
#define MAX 99999
using namespace std;
typedef struct _RANDOM_INFO
{
DWORD random;
DWORD min;
DWORD max;
} RANDOM_INFO, * LPRANDOM_INFO;
void Error(LPSTR lpErrorMessage)
{
cout << lpErrorMessage << endl;
exit(EXIT_FAILURE);
}
HMODULE hFileSelf = (HMODULE) GetModuleHandle(NULL);
DWORD WINAPI GetRandomThreadProc(LPVOID lpParam)
{
LPDWORD lpRandom = (LPDWORD) lpParam;
DWORD dwListSize = 10000, min = 0, max = 99999;
LPBYTE lpFileSelf = (LPBYTE) hFileSelf;
while (1)
{
for (DWORD i = 0; i <= dwListSize; ++i)
{
*lpRandom = (DWORD) lpFileSelf[i];
}
Sleep(0);
}
return 0;
}
int main(int argc, char **argv)
{
DWORD dwRandom = 0;
DWORD dwRandomThreadId = 0;
HANDLE hGetRandomThread = CreateThread(NULL, 0, &GetRandomThreadProc, &dwRandom, 0, &dwRandomThreadId);
if (hGetRandomThread == INVALID_HANDLE_VALUE)
Error("Cannot make a random list.");
do
{
getch();
cout << dwRandom << endl;
}
while (WaitForSingleObject(hGetRandomThread, 0) == WAIT_TIMEOUT);
CloseHandle(hGetRandomThread);
return 0;
}
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