Java调用Win32实现操作其他程序窗口

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我是靠谱客的博主帅气龙猫，最近开发中收集的这篇文章主要介绍Java调用Win32实现操作其他程序窗口，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

1、用到的包

①jna-4.4.0.jar和jna-platform-4.4.0（下载地址）

②JNative.jar（下载地址）

2、使用方式：向QQ输入文本为例

public class QQTest {
public static void main(String[] args) {
// 第一个参数是Windows窗体的窗体类，第二个参数是窗体的标题。
HWND hwnd = User32.INSTANCE.FindWindow(null, "QQ");
if (hwnd == null) {
System.out.println("QQ is not running");
} else {
User32.INSTANCE.ShowWindow(hwnd, 9); // SW_RESTORE
User32.INSTANCE.SetForegroundWindow(hwnd); // bring to front
WinDef.RECT qqwin_rect = new WinDef.RECT();
User32.INSTANCE.GetWindowRect(hwnd, qqwin_rect);
int qqwin_width = qqwin_rect.right - qqwin_rect.left;
int qqwin_height = qqwin_rect.bottom - qqwin_rect.top;
User32.INSTANCE.MoveWindow(hwnd, 0, 0, qqwin_width, qqwin_height, true);
User32.INSTANCE.PostMessage(hwnd, User32.WM_CLOSE, null, null);
String username = "11111111111";
for (Character c : username.toCharArray())
sendChar(c);
@formatter:off
User32.INSTANCE.GetForegroundWindow(); // 获取现在前台窗口
WinDef.RECT qqwin_rect = new WinDef.RECT();
User32.INSTANCE.GetWindowRect(hwnd, qqwin_rect);
int qqwin_width = qqwin_rect.right - qqwin_rect.left;
int qqwin_height = qqwin_rect.bottom - qqwin_rect.top;
User32.INSTANCE.MoveWindow(hwnd, 700, 100, qqwin_width, qqwin_height, true);
for (int i = 700; i > 100; i -= 10) {
User32.INSTANCE.MoveWindow(hwnd, i, 100, qqwin_width, qqwin_height, true);
try {
Thread.sleep(10);
} catch (Exception e) {
}
}
User32.INSTANCE.PostMessage(hwnd, WinUser.WM_CLOSE, null, null);
@formatter:on
}
}
private static WinUser.INPUT input = new WinUser.INPUT();
private static void sendChar(char ch) {
input.type = new WinDef.DWORD(WinUser.INPUT.INPUT_KEYBOARD);
input.input.setType("ki");
input.input.ki.wScan = new WinDef.WORD(0);
input.input.ki.time = new WinDef.DWORD(0);
input.input.ki.dwExtraInfo = new BaseTSD.ULONG_PTR(0);
// Press
input.input.ki.wVk = new WinDef.WORD(Character.toUpperCase(ch)); // 0x41
input.input.ki.dwFlags = new WinDef.DWORD(0); // keydown
User32.INSTANCE.SendInput(new WinDef.DWORD(1), (WinUser.INPUT[]) input.toArray(1), input.size());
// Release
input.input.ki.wVk = new WinDef.WORD(Character.toUpperCase(ch)); // 0x41
input.input.ki.dwFlags = new WinDef.DWORD(2); // keyup
User32.INSTANCE.SendInput(new WinDef.DWORD(1), (WinUser.INPUT[]) input.toArray(1), input.size());
}
}

2、自定义User32接口发送文本（原Use32接口只允许十进制或十六进制数字）

public interface MyUser32 extends StdCallLibrary, WinUser {
static MyUser32 INSTANCE = (MyUser32) Native
.loadLibrary("user32", MyUser32.class, W32APIOptions.DEFAULT_OPTIONS);
int SendMessage(HWND hWnd, int Msg, int wParam, String lParam);
// http://msdn.microsoft.com/en-us/library/windows/desktop/ms633573(v=vs.85).aspx
interface WindowProc extends StdCallCallback {
LRESULT callback(HWND hWnd, int uMsg, WPARAM wParam, LPARAM lParam);
}
// http://msdn.microsoft.com/en-us/library/windows/desktop/ms633591(v=vs.85).aspx
WindowProc SetWindowLongPtr(HWND hWnd, int nIndex, WindowProc dwNewLong);
// http://msdn.microsoft.com/en-us/library/windows/desktop/ms633584(v=vs.85).aspx
WindowProc GetWindowLongPtr(HWND hWnd, int nIndex);
}