可以根据窗口布局或HKL获取输入名字,windows消息WM_INPUTLANGCHANGE的LPARAM就是HKL

QString getImeNameFromHKL(HKL hkl) {
    const int BUF_LEN = 1024;
    wchar_t buf[BUF_LEN] = { 0 };
    ImmGetIMEFileName(hkl, buf, BUF_LEN - 2);
    QString result = QString::fromStdWString(buf);
    return result;
}

QString getImeNameFromWnd(HWND hwnd) {
    DWORD threadId = GetWindowThreadProcessId(hwnd, NULL);
    HKL hkl = GetKeyboardLayout(threadId);
    return getImeNameFromHKL(hkl);
}

调整输入法候选框位置

HIMC himc = ImmGetContext(hwnd);
CANDIDATEFORM cand;
cand.dwIndex = 0;
cand.dwStyle = CFS_CANDIDATEPOS;
cand.ptCurrentPos.x = 0;
cand.ptCurrentPos.y = 0;
ImmSetCandidateWindow(himc, &cand);
ImmReleaseContext(hwnd, himc);

包含头文件

#include <Windows.h>
#pragma comment(lib, "Imm32.lib")

支持win7及以下系统,win8及以上的系统可能用的新输入法框架

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