Danbias/Code/LabProjects/RawDeviceLab/main.cpp

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#include <Windows.h>
const unsigned short raw_input_usage_keyboard = 6;
const unsigned short raw_input_usage_mouse = 2;
HWND winHandle;
bool isPointAndClickMode;
float normalizedMousePosX, normalizedMousePosY;
LRESULT CALLBACK RawWindowCallback(HWND h, UINT m, WPARAM w, LPARAM l);
LRESULT RawInputParser(HWND h, LPARAM l);
void Update( );
//int main()
int WINAPI WinMain( HINSTANCE hinst, HINSTANCE prevInst, PSTR cmdLine, int cmdShow)
{
WNDCLASSEXW wc;
wc.cbSize = sizeof(WNDCLASSEXW);
wc.hIconSm = NULL;
wc.style = NULL;
wc.lpfnWndProc = RawWindowCallback;
wc.cbClsExtra = NULL;
wc.cbWndExtra = NULL;
wc.hInstance = hinst;
wc.hIcon = NULL;
wc.hCursor = NULL;
wc.hbrBackground = NULL;
wc.lpszMenuName = NULL;
wc.lpszClassName = L"RawInputTest";
if( !RegisterClassExW(&wc) )
{
const char *breakpoint = "";
}
winHandle = CreateWindowExW( 0, L"RawInputTest", L"RawInputTest", WS_OVERLAPPEDWINDOW | WS_CAPTION, 0, 0, 600, 400, NULL, NULL, hinst, NULL );
ShowWindow( winHandle, cmdShow );
if( !winHandle )
{
const char *breakpoint = "";
}
isPointAndClickMode = true;
normalizedMousePosX =
normalizedMousePosY = 0.5f;
MSG msg = {0};
while( true )
{
if( PeekMessage(&msg, NULL, 0, 0, PM_REMOVE) )
{
if (msg.message == WM_QUIT) break;
DispatchMessage(&msg);
}
else
{
Update();
}
}
return 0;
}
LRESULT CALLBACK RawWindowCallback(HWND h, UINT m, WPARAM w, LPARAM l)
{
LRESULT val = 0;
switch (m)
{
case WM_INPUT:
{
RawInputParser( h, l );
}
break;
case WM_KEYUP:
{
if( w == 16 )
{
const char *breakpoint = "";
RAWINPUTDEVICE rid;
rid.usUsagePage = 0x01;
rid.hwndTarget = winHandle;
rid.usUsage = raw_input_usage_keyboard;
rid.dwFlags = RIDEV_NOLEGACY;
if( RegisterRawInputDevices(&rid, 1, sizeof(RAWINPUTDEVICE)) == FALSE )
{
const char *breakpoint = "";
}
}
}
break;
case WM_RBUTTONUP:
{
const char *breakpoint = "";
RAWINPUTDEVICE rid;
rid.usUsagePage = 0x01;
rid.hwndTarget = winHandle;
rid.usUsage = raw_input_usage_mouse;
rid.dwFlags = RIDEV_NOLEGACY | RIDEV_CAPTUREMOUSE;
if( RegisterRawInputDevices(&rid, 1, sizeof(RAWINPUTDEVICE)) == TRUE )
{
ShowCursor( false );
isPointAndClickMode = false;
}
else
{
const char *breakpoint = "";
}
}
break;
case WM_ACTIVATE:
{
const char *breakpoint = "";
}
break;
break;
case WM_CREATE:
{
const char *breakpoint = "";
}
break;
case WM_DESTROY:
PostQuitMessage( 0 );
break;
default: break;
}
return DefWindowProc(h, m, w, l);
}
LRESULT RawInputParser(HWND h, LPARAM l)
{
//Get The size of the raw data buffer
UINT bufferSize;
GetRawInputData((HRAWINPUT)l, RID_INPUT, NULL, &bufferSize, sizeof(RAWINPUTHEADER));
if (bufferSize < 1)
{ return 0; }
//Create and read the raw input data
LPBYTE rawBuffer = new BYTE[bufferSize];
UINT readBytes = GetRawInputData((HRAWINPUT)l, RID_INPUT, rawBuffer, &bufferSize, sizeof(RAWINPUTHEADER));
if ( readBytes != bufferSize )
{
delete [] rawBuffer;
return 0;
}
HRESULT result = 0;
RAWINPUT* raw = (RAWINPUT*)rawBuffer;
if( raw->header.dwType == RIM_TYPEKEYBOARD )
{
if( (raw->data.keyboard.Flags & RI_KEY_BREAK) && raw->data.keyboard.VKey == 16 )
{
const char *breakpoint = "";
RAWINPUTDEVICE rid;
rid.usUsagePage = 0x01;
rid.hwndTarget = NULL;
rid.usUsage = raw_input_usage_keyboard;
rid.dwFlags = RIDEV_REMOVE;
if( RegisterRawInputDevices(&rid, 1, sizeof(RAWINPUTDEVICE)) == FALSE )
{
const char *breakpoint = "";
}
}
}
else if( raw->header.dwType == RIM_TYPEMOUSE )
{
if( raw->data.mouse.usButtonFlags & RI_MOUSE_MIDDLE_BUTTON_UP )
{
const char *breakpoint = "";
RAWINPUTDEVICE rid;
rid.usUsagePage = 0x01;
rid.hwndTarget = NULL;
rid.usUsage = raw_input_usage_mouse;
rid.dwFlags = RIDEV_REMOVE;
if( RegisterRawInputDevices(&rid, 1, sizeof(RAWINPUTDEVICE)) == TRUE )
{
RECT winRect;
GetWindowRect( winHandle, &winRect );
SetCursorPos( (winRect.left + winRect.right) >> 1, (winRect.top + winRect.bottom) >> 1 );
isPointAndClickMode = true;
}
else
{
const char *breakpoint = "";
}
}
}
else result = DefRawInputProc(&raw, 1, sizeof(RAWINPUTHEADER));
delete [] rawBuffer;
return result;
}
void Update( )
{
if( isPointAndClickMode )
{
{ // Calculating and storing the normalizedMousePos values
POINT clientReach, clientCenter, mousePos;
RECT winRect, clientRect;
GetClientRect( winHandle, &clientRect );
GetWindowRect( winHandle, &winRect );
LONG borderThickness = (winRect.right - winRect.left - clientRect.right) >> 1;
clientReach.x = clientRect.right >> 1;
clientReach.y = clientRect.bottom >> 1;
clientCenter.x = (winRect.left + winRect.right) >> 1;
clientCenter.y = winRect.bottom - clientReach.y - borderThickness;
GetCursorPos( &mousePos );
normalizedMousePosX = ((float)(mousePos.x - clientCenter.x + clientReach.x)) / (float)clientRect.right;
normalizedMousePosY = ((float)(mousePos.y - clientCenter.y + clientReach.y)) / (float)clientRect.bottom;
}
// Check if normalizedMousePos intersects client surface [(0,0), (1,1)]
bool mouseIsNowWithinBounds = true;
if ( normalizedMousePosX < 0.0f ) mouseIsNowWithinBounds = false;
else if( normalizedMousePosX > 1.0f ) mouseIsNowWithinBounds = false;
else if( normalizedMousePosY < 0.0f ) mouseIsNowWithinBounds = false;
else if( normalizedMousePosY > 1.0f ) mouseIsNowWithinBounds = false;
// Detect onEnter or onExit case
static bool mouseWereWithinBounds = false;
if( mouseIsNowWithinBounds & !mouseWereWithinBounds )
{ // onEnter
ShowCursor( false );
mouseWereWithinBounds = mouseIsNowWithinBounds;
}
else if( !mouseIsNowWithinBounds & mouseWereWithinBounds )
{ // onExit
ShowCursor( true );
mouseWereWithinBounds = mouseIsNowWithinBounds;
}
}
}