深入掌握Win32 API与Windows内核级开发技术
Windows系统编程是指使用Windows操作系统提供的API(应用程序编程接口)进行软件开发,直接与操作系统内核交互,实现对进程、线程、内存、文件系统、注册表等核心资源的管理和控制。这种编程方式通常使用C/C++语言,通过调用Win32 API或Windows SDK来完成。
创建、控制和监控系统中的进程与线程是系统编程的基础。
CreateProcess()
- 创建新进程CreateThread()
- 创建线程WaitForSingleObject()
- 等待对象状态变化直接操作虚拟内存空间,实现高效的数据处理。
VirtualAlloc()
/ VirtualFree()
- 分配和释放虚拟内存使用底层API进行高效的文件读写和设备操作。
CreateFile()
- 打开文件或设备ReadFile()
/ WriteFile()
- 同步读写以下是一个使用Win32 API创建基本窗口的C++代码片段:
#include <windows.h>
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow) {
static TCHAR szAppName[] = TEXT("HelloWin");
HWND hwnd;
MSG msg;
WNDCLASS wndclass;
wndclass.style = CS_HREDRAW | CS_VREDRAW;
wndclass.lpfnWndProc = WndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 0;
wndclass.hInstance = hInstance;
wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
wndclass.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
wndclass.lpszMenuName = NULL;
wndclass.lpszClassName = szAppName;
if (!RegisterClass(&wndclass)) {
MessageBox(NULL, TEXT("This program requires Windows NT!"),
szAppName, MB_ICONERROR);
return 0;
}
hwnd = CreateWindow(szAppName, TEXT("The Hello Program"),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, hInstance, NULL);
ShowWindow(hwnd, iCmdShow);
UpdateWindow(hwnd);
while (GetMessage(&msg, NULL, 0, 0)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) {
HDC hdc;
PAINTSTRUCT ps;
RECT rect;
switch (message) {
case WM_PAINT:
hdc = BeginPaint(hwnd, &ps);
GetClientRect(hwnd, &rect);
DrawText(hdc, TEXT("Hello, Windows Programming!"), -1, &rect,
DT_SINGLELINE | DT_CENTER | DT_VCENTER);
EndPaint(hwnd, &ps);
return 0;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hwnd, message, wParam, lParam);
}