Simulate the wm_char msg , send multi-byte

SendInput is ok, here i submit some code:

#include <afx.h>

void SendAscii(wchar_t data, BOOL shift);
void SendUnicode(wchar_t data);
void SendKeys(CString msg);

void SendAscii(wchar_t data, BOOL shift)
{
INPUT input[2];
memset(input, 0, 2 * sizeof(INPUT));

if (shift) {
input[0].type = INPUT_KEYBOARD;
input[0].ki.wVk = VK_SHIFT;
SendInput(1, input, sizeof(INPUT));
}

input[0].type = INPUT_KEYBOARD;
input[0].ki.wVk = data;

input[1].type = INPUT_KEYBOARD;
input[1].ki.wVk = data;
input[1].ki.dwFlags = KEYEVENTF_KEYUP;

SendInput(2, input, sizeof(INPUT));

if (shift) {
input[0].type = INPUT_KEYBOARD;
input[0].ki.wVk = VK_SHIFT;
input[0].ki.dwFlags = KEYEVENTF_KEYUP;
SendInput(1, input, sizeof(INPUT));
}
}


void SendUnicode(wchar_t data)
{
INPUT input[2];
memset(input, 0, 2 * sizeof(INPUT));

input[0].type = INPUT_KEYBOARD;
input[0].ki.wVk = 0;
input[0].ki.wScan = data;
input[0].ki.dwFlags = 0x4;//KEYEVENTF_UNICODE;

input[1].type = INPUT_KEYBOARD;
input[1].ki.wVk = 0;
input[1].ki.wScan = data;
input[1].ki.dwFlags = KEYEVENTF_KEYUP | 0x4;//KEYEVENTF_UNICODE;

SendInput(2, input, sizeof(INPUT));
}

void SendString(CString msg)
{
short vk;
BOOL shift;

USES_CONVERSION;
wchar_t* data = T2W(msg.GetBuffer(0));
int len = wcslen(data);

for(int i=0;i<len;i++)
{
if (data[i]>=0 && data[i]<256)
{ //ascii charactor
vk = VkKeyScanW(data[i]);

if (vk == -1) SendUnicode(data[i]);
else
{
if (vk < 0) vk = ~vk + 0x1;

shift = vk >> 8 & 0x1;

if (GetKeyState(VK_CAPITAL) & 0x1) {
if (data[i]>='a' && data[i]<='z' || data[i]>='A' && data[i]<='Z')
{
shift = !shift;
}
}

SendAscii(vk & 0xFF, shift);
Sleep(100);
}
}
else //unicode
{
SendUnicode(data[i]);
Sleep(100);
}
}
}