There are many examples on the Internet, all of which realize the opening of the system on-screen keyboard, but the closing cannot be realized.
Pro-test the effective method in qt, using the win10 system.
import header file
#include <Windows.h>
#pragma comment(lib, "user32.lib")//Open the on-screen keyboard to use the header file
There are two on-screen keyboards, one osk.exe and one TabTip.exe
How to open the osk keyboard:
PVOID OldValue;
BOOL bRet = Wow64DisableWow64FsRedirection (&OldValue);
QString keyboardpath="C:\\Windows\\System32\\osk.exe";
QString params="";
ShellExecute(NULL, L"open", (LPCWSTR)keyboardpath.utf16(), (LPCWSTR)params.utf16(), NULL, SW_SHOWNORMAL);
if (bRet)
{
Wow64RevertWow64FsRedirection(OldValue);
}
closure:
HWND appWnd;
appWnd = ::FindWindow(L"OSKMainClass", NULL);
if (appWnd)
{
SendMessage(appWnd, WM_SYSCOMMAND, SC_CLOSE, 0);
qDebug() << "closeKeyboard succeed";
}
else
{
qDebug() << "closeKeyboard failed";
}
TabTip.exe keyboard is called in the same way as osk.exe, but the path is different
QString keyboardpath="C:\\Program Files\\Common Files\\microsoft shared\\ink\\TabTip.exe";
closure:
appWnd = ::FindWindow(L"IPTIP_Main_Window", NULL);
Others are the same as osk shutdown
Notice:
SendMessage(appWnd, WM_SYSCOMMAND, SC_CLOSE, 0);
The parameters in this function should be written like this, both closing the keyboard are valid,
Written as SendMessage(appWnd, WM_CLOSE,0, 0); it has no effect, I tested it myself.