insert state differs in processes

Question

Hello!

 I program for audible keystrokes using RawInput.

I test the insert state with 

( GetKeyState(VK_INSERT) & 1 )

to differ the sound output 'INSERT ON' or 'INSERT OFF'

While testing this detail it happens that simultaneous editors 

use different insert states for typed text.

Is this normal?

By the way I found that if I type the INSERT key RawInput event routine is triggered with a Virtual-Key 0xFF

Thank you for discussion

Erhy

Answer 1

Yes, it's normal for the Insert key. Different text editors can be in different Insert/Overwrite modes at the same time.

Answer 2

Hi,

Thanks for posting here.

By the way I found that if I type the INSERT key RawInput event routine is triggered with a Virtual-Key 0xFF

I get the VK key = 0x2d(VK_INSERT) could you mind share the sample you have tested?

Here is the sample I am using:

#include <windows.h>
#include <iostream>

using namespace std;
BOOL registerTouchpadForInput(HWND hWnd)
{
    RAWINPUTDEVICE rid;
    rid.dwFlags = RIDEV_NOLEGACY | RIDEV_INPUTSINK;
    rid.usUsagePage = 1;                            
    rid.usUsage = 6;// raw keyboard data only
    rid.hwndTarget = hWnd;
    return RegisterRawInputDevices(&rid, 1, sizeof(rid));
}
void getinputdata(LPARAM lparam)
{
    HRAWINPUT hInput = (HRAWINPUT)lparam;
    RAWINPUT input = { 0 };

    UINT size = sizeof(RAWINPUT);
    GetRawInputData(hInput, RID_INPUT,&input, &size,sizeof(RAWINPUTHEADER));
    if (RIM_TYPEKEYBOARD == input.header.dwType)
    {
        std::cout << "vk:" << input.data.keyboard.VKey << std::endl;
        SHORT status = GetKeyState(VK_INSERT) & 1;
        std::cout << "status:" << status << std::endl;
    }
    return;
}

static LRESULT CALLBACK NVTouch_WindowProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    BOOL  registrationStatus = false;
    switch (message)
    {
    case WM_CREATE:
        registrationStatus = registerTouchpadForInput(hwnd);
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    case WM_INPUT:
        getinputdata(lParam);
        return DefWindowProc(hwnd, message, wParam, lParam);
    default:
        return DefWindowProc(hwnd, message, wParam, lParam);
    }
    return 0;
}

int main()
{
    WNDCLASSEX wndclass = {
        sizeof(WNDCLASSEX),
        CS_DBLCLKS,
        NVTouch_WindowProc,
        0,
        0,
        GetModuleHandle(0),
        LoadIcon(0,IDI_APPLICATION),
        LoadCursor(0,IDC_ARROW),
        HBRUSH(COLOR_WINDOW + 1),
        0,
        L"myclass",
        LoadIcon(0,IDI_APPLICATION)
    };
    bool isClassRegistered = false;
    isClassRegistered = RegisterClassEx(&wndclass);
    if (isClassRegistered)
    {
        std::cout << "window class registered!" << std::endl;
        //HWND window = CreateWindowEx(0, L"myclass", L"title", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, 0, 0, GetModuleHandle(0), 0);
        HWND window = CreateWindow(wndclass.lpszClassName, NULL, 0, 0, 0, 0, 0, HWND_MESSAGE, NULL, GetModuleHandle(0), NULL);
        if (window)
        {
            ShowWindow(window, SW_SHOWDEFAULT);
            MSG msg;
            while (GetMessage(&msg, 0, 0, 0))
            {
                TranslateMessage(&msg);
                DispatchMessage(&msg);
            }
        }
    }
}

Best Regards,

Drake

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Answer 3

my code is similar.
the only difference is, that you use
RIDEV_NOLEGACY for the flag to  RegisterRawInputDevices(…)

this property cryptically for me.

With short tests, set or not set, make no differences.

In my debug log I read

17:59:25|809 OnRawInput: hDevice 1 Kbd: make=002a Flags:0002 Reserved:0000 ExtraInformation:00000000, msg=0100 VK=00ff  X'0'
17:59:25|809 MakeCode == KEYBOARD_OVERRUN_MAKE_CODE or VKey == 0xff VKey= X'FF'
17:59:25|810 OnRawInput: hDevice 1 Kbd: make=0052 Flags:0002 Reserved:0000 ExtraInformation:00000000, msg=0100 VK=002d  X'0' 

Erhy