Using the Message Buffer

The following example shows how to use the message buffer:

MyGenerateMesage(HIMC hIMC, UINT msg, WPARAM wParam, LPARAMlParam)
{
    LPINPUTCONTEXT lpIMC;
    HGLOBAL hTemp;
    LPDWORD lpdwMsgBuf;
    DWORD dwMyNumMsg = 1;

    // Lock the input context.
    lpIMC = ImmLockIMC(hIMC);
    if (!lpIMC)
        // Error!

    // re-allocate the memory bloack for the message buffer.
    hTemp = ImmReSizeIMCC(lpIMC->hMsgBuf, 
        (lpIMC->dwNumMsgBuf + dwMyNumMsg) * sizeof(DWORD) * 3);
    if (!hTemp)
        // Error!

    lpIMC->hMsgBuf = hTemp;

    // Lock the memory for the message buffer.
    lpdwMsgBuf = ImmLockIMCC(lpIMC->hMsgBuf);
    if (!lpdwMsgBuf)
        // Error!

    lpdwNumMsgBuf += 3 * lpIMC->dwNumMsgBuf.
    // Set the number of the messages.
    lpIMC->dwNumMsgBuf += dwMyNumMsg;

    // Set the messages that the IME needs to generate.
    *lpdwMsgBuf++ = (DWORD) msg;
    *lpdwMsgBuf++ = (DWORD) wParam;
    *lpdwMsgBuf++ = (DWORD) lParam;

    // Unlock the memory for the message buffer and the input context.
    ImmUnlockIMCC(lpIMC->hMsgBuf);
    ImmLockIMC(hIMC);

    // Call ImmGenerateMessage function.
    ImmGenerateMessage(hIMC);
}