bool CUnixEventEmitter::processMessage (XEvent &event, CEventServer *server) { if (!server) server=&_InternalServer; XWindowAttributes xwa; XGetWindowAttributes (_dpy, _win, &xwa); switch (event.type) { case ButtonPress: { //nlinfo("%d %d %d", event.xbutton.button, event.xbutton.x, event.xbutton.y); float fX = (float) event.xbutton.x / (float) xwa.width; float fY = 1.0f - (float) event.xbutton.y / (float) xwa.height; TMouseButton button=getMouseButton(event.xbutton.state); switch(event.xbutton.button) { case Button1: server->postEvent(new CEventMouseDown(fX, fY, (TMouseButton)(leftButton|(button&~(leftButton|middleButton|rightButton))), this)); break; case Button2: server->postEvent(new CEventMouseDown(fX, fY, (TMouseButton)(middleButton|(button&~(leftButton|middleButton|rightButton))), this)); break; case Button3: server->postEvent(new CEventMouseDown(fX, fY, (TMouseButton)(rightButton|(button&~(leftButton|middleButton|rightButton))), this)); break; case Button4: server->postEvent(new CEventMouseWheel(fX, fY, button, true, this)); break; case Button5: server->postEvent(new CEventMouseWheel(fX, fY, button, false, this)); break; } break; } case ButtonRelease: { //nlinfo("%d %d %d", event.xbutton.button, event.xbutton.x, event.xbutton.y); float fX = (float) event.xbutton.x / (float) xwa.width; float fY = 1.0f - (float) event.xbutton.y / (float) xwa.height; switch(event.xbutton.button) { case Button1: server->postEvent(new CEventMouseUp(fX, fY, leftButton, this)); break; case Button2: server->postEvent(new CEventMouseUp(fX, fY, middleButton, this)); break; case Button3: server->postEvent(new CEventMouseUp(fX, fY, rightButton, this)); break; } break; } case MotionNotify: { TMouseButton button=getMouseButton (event.xbutton.state); // if raw mode should be emulated if(_emulateRawMode) { // when we just wrapped back the pointer to 0.5 / 0.5, ignore event if(event.xbutton.x == xwa.width / 2 && event.xbutton.y == xwa.height / 2) break; // post a CGDMouseMove with the movement delta to the event server server->postEvent( new CGDMouseMove(this, NULL /* no mouse device */, event.xbutton.x - (xwa.width / 2), (xwa.height / 2) - event.xbutton.y)); // move the pointer back to the center of the window XWarpPointer(_dpy, None, _win, None, None, None, None, (xwa.width / 2), (xwa.height / 2)); } // if in normal mouse mode else { // get the relative mouse position float fX = (float) event.xbutton.x / (float) xwa.width; float fY = 1.0f - (float) event.xbutton.y / (float) xwa.height; // post a normal mouse move event to the event server server->postEvent (new CEventMouseMove (fX, fY, button, this)); } break; } case KeyPress: { // save keycode because XFilterEvent could set it to 0 uint keyCode = event.xkey.keycode; KeySym k; static char Text[256]; int c = 0; // check if event is filtered bool filtered = XFilterEvent(&event, _win); // if key event is filtered, we shouldn't use XLookupString to retrieve KeySym if (!filtered) { Status status = XLookupNone; #ifdef X_HAVE_UTF8_STRING if (_ic) c = Xutf8LookupString(_ic, &event.xkey, Text, sizeof(Text), &k, &status); #endif if (status == XLookupNone) c = XLookupString(&event.xkey, Text, sizeof(Text), &k, NULL); } else { k = XKeycodeToKeysym(_dpy, keyCode, 0); } // send CEventKeyDown event only if keyCode is defined if (keyCode) { TKey key = getKeyFromKeySym(k); if(key == KeyNOKEY) key = getKeyFromKeycode(keyCode); // search for key in map std::map<TKey, bool>::const_iterator it = _PressedKeys.find(key); // if key is not found or value is false, that's the first time bool firstTime = (it == _PressedKeys.end()) || !it->second; server->postEvent (new CEventKeyDown (key, getKeyButton(event.xbutton.state), firstTime, this)); _PressedKeys[key] = true; // don't send a control character when deleting if (key == KeyDELETE) c = 0; } Text[c] = '\0'; if(c>0) { #ifdef X_HAVE_UTF8_STRING ucstring ucstr; ucstr.fromUtf8(Text); CEventChar *charEvent = new CEventChar (ucstr[0], getKeyButton(event.xbutton.state), this); // raw if not processed by IME charEvent->setRaw(keyCode != 0); server->postEvent (charEvent); #else for (int i = 0; i < c; i++) { CEventChar *charEvent = new CEventChar ((ucchar)(unsigned char)Text[i], getKeyButton(event.xbutton.state), this); // raw if not processed by IME charEvent->setRaw(keyCode != 0); server->postEvent (charEvent); } #endif } break; } case KeyRelease: { if (!keyRepeat(_dpy, &event)) { KeySym k; // only need to get correct KeySym int c = XLookupString(&event.xkey, NULL, 0, &k, NULL); TKey key = getKeyFromKeySym(k); if(key == KeyNOKEY) key = getKeyFromKeycode(event.xkey.keycode); server->postEvent (new CEventKeyUp (key, getKeyButton(event.xbutton.state), this)); _PressedKeys[key] = false; } break; } case SelectionRequest: { XEvent respond; XSelectionRequestEvent req = event.xselectionrequest; respond.xselection.type= SelectionNotify; respond.xselection.display= req.display; respond.xselection.requestor= req.requestor; respond.xselection.selection=req.selection; respond.xselection.target= req.target; respond.xselection.time = req.time; respond.xselection.property = req.property; if (req.property == None) { respond.xselection.property = req.target; } if (req.target == XA_TARGETS) { Atom targets[] = { XA_TARGETS, XA_STRING, XA_UTF8_STRING }; respond.xselection.property = req.property; XChangeProperty(req.display, req.requestor, req.property, XA_ATOM, 32, PropModeReplace, (unsigned char *)targets, 3 /* number of element */); } else if (req.target == XA_STRING) { respond.xselection.property = req.property; std::string str = _CopiedString.toString(); XChangeProperty(req.display, req.requestor, req.property, XA_STRING, 8, PropModeReplace, (const unsigned char*)str.c_str(), str.length()); } else if (req.target == XA_UTF8_STRING) { respond.xselection.property = req.property; std::string str = _CopiedString.toUtf8(); XChangeProperty(req.display, req.requestor, respond.xselection.property, XA_UTF8_STRING, 8, PropModeReplace, (const unsigned char*)str.c_str(), str.length()); } else { // Note: Calling XGetAtomName with arbitrary value crash the client, maybe req.target have been sanitized by X11 server respond.xselection.property = None; } XSendEvent (_dpy, req.requestor, 0, 0, &respond); break; } case SelectionClear: _SelectionOwned = false; _CopiedString = ""; break; case SelectionNotify: { Atom target = event.xselection.target; Atom actualType = 0; int actualFormat = 0; unsigned long nitems = 0, bytesLeft = 0; // some applications are sending ATOM and other TARGETS if (target == XA_TARGETS || target == XA_ATOM) { Atom *supportedTargets = NULL; // list NeL selection properties if (XGetWindowProperty(_dpy, _win, XA_NEL_SEL, 0, XMaxRequestSize(_dpy), False, AnyPropertyType, &actualType, &actualFormat, &nitems, &bytesLeft, (unsigned char**)&supportedTargets) != Success) return false; if (bytesLeft > 0) { nlwarning("Paste: Supported TARGETS list too long."); } Atom bestTarget = 0; sint bestTargetElect = 0; // Elect best type for (uint i=0; i < nitems; i++) { // nlwarning(" - Type=%s (%u)", XGetAtomName(_dpy, supportedTargets[i]), (uint)supportedTargets[i]); if (supportedTargets[i] == XA_UTF8_STRING ) { if (bestTargetElect < 2) { bestTarget = XA_UTF8_STRING; bestTargetElect = 2; } } else if (supportedTargets[i] == XA_STRING ) { if (bestTargetElect < 1) { bestTarget = XA_STRING; bestTargetElect = 1; } } } XFree(supportedTargets); if (!bestTargetElect) { nlwarning("Paste buffer is not a text buffer."); return false; } // request string conversion XConvertSelection(_dpy, XA_CLIPBOARD, bestTarget, XA_NEL_SEL, _win, CurrentTime); } else if (target == XA_UTF8_STRING || target == XA_STRING) { uint8 *data = NULL; // get selection if (XGetWindowProperty(_dpy, _win, XA_NEL_SEL, 0, XMaxRequestSize(_dpy), False, AnyPropertyType, &actualType, &actualFormat, &nitems, &bytesLeft, (unsigned char**)&data) != Success) return false; ucstring text; std::string tmpData = (const char*)data; XFree(data); // convert buffer to ucstring if (target == XA_UTF8_STRING) { text = ucstring::makeFromUtf8(tmpData); } else if (target == XA_STRING) { text = tmpData; } else { nlwarning("Unknow format %u", (uint)target); } // sent string event to event server server->postEvent (new CEventString (text, this)); } else { nlwarning("Unknow target %u", (uint)target); } break; } case FocusIn: // keyboard focus // server->postEvent (new CEventSetFocus (true, this)); if (_ic) XSetICFocus(_ic); break; case FocusOut: // keyboard focus // server->postEvent (new CEventSetFocus (false, this)); if (_ic) XUnsetICFocus(_ic); break; case KeymapNotify: break; case MappingNotify: // update keymap XRefreshKeyboardMapping((XMappingEvent *)&event); break; case DestroyNotify: // XIM server has crashed createIM(); break; case ClientMessage: if ((event.xclient.format == 32) && ((Atom)event.xclient.data.l[0] == XA_WM_DELETE_WINDOW)) { server->postEvent(new CEventDestroyWindow(this)); } break; default: // nlinfo("UnknownEvent"); // XtDispatchEvent(&event); return false; } return true; }
ServerProxy::EResult ServerProxy::parseMessage(const UInt8* code) { if (memcmp(code, kMsgDMouseMove, 4) == 0) { mouseMove(); } else if (memcmp(code, kMsgDMouseRelMove, 4) == 0) { mouseRelativeMove(); } else if (memcmp(code, kMsgDMouseWheel, 4) == 0) { mouseWheel(); } else if (memcmp(code, kMsgDKeyDown, 4) == 0) { keyDown(); } else if (memcmp(code, kMsgDKeyUp, 4) == 0) { keyUp(); } else if (memcmp(code, kMsgDMouseDown, 4) == 0) { mouseDown(); } else if (memcmp(code, kMsgDMouseUp, 4) == 0) { mouseUp(); } else if (memcmp(code, kMsgDKeyRepeat, 4) == 0) { keyRepeat(); } else if (memcmp(code, kMsgCKeepAlive, 4) == 0) { // echo keep alives and reset alarm ProtocolUtil::writef(m_stream, kMsgCKeepAlive); resetKeepAliveAlarm(); } else if (memcmp(code, kMsgCNoop, 4) == 0) { // accept and discard no-op } else if (memcmp(code, kMsgCEnter, 4) == 0) { enter(); } else if (memcmp(code, kMsgCLeave, 4) == 0) { leave(); } else if (memcmp(code, kMsgCClipboard, 4) == 0) { grabClipboard(); } else if (memcmp(code, kMsgCScreenSaver, 4) == 0) { screensaver(); } else if (memcmp(code, kMsgQInfo, 4) == 0) { queryInfo(); } else if (memcmp(code, kMsgCInfoAck, 4) == 0) { infoAcknowledgment(); } else if (memcmp(code, kMsgDClipboard, 4) == 0) { setClipboard(); } else if (memcmp(code, kMsgCResetOptions, 4) == 0) { resetOptions(); } else if (memcmp(code, kMsgDSetOptions, 4) == 0) { setOptions(); } else if (memcmp(code, kMsgDFileTransfer, 4) == 0) { fileChunkReceived(); } else if (memcmp(code, kMsgDDragInfo, 4) == 0) { dragInfoReceived(); } else if (memcmp(code, kMsgCClose, 4) == 0) { // server wants us to hangup LOG((CLOG_DEBUG1 "recv close")); m_client->disconnect(NULL); return kDisconnect; } else if (memcmp(code, kMsgEBad, 4) == 0) { LOG((CLOG_ERR "server disconnected due to a protocol error")); m_client->disconnect("server reported a protocol error"); return kDisconnect; } else { return kUnknown; } // send a reply. this is intended to work around a delay when // running a linux server and an OS X (any BSD?) client. the // client waits to send an ACK (if the system control flag // net.inet.tcp.delayed_ack is 1) in hopes of piggybacking it // on a data packet. we provide that packet here. i don't // know why a delayed ACK should cause the server to wait since // TCP_NODELAY is enabled. ProtocolUtil::writef(m_stream, kMsgCNoop); return kOkay; }
int app( int argc, char** argv ) { gengetopt_args_info options; int err = cmdline_parser( argc, argv, &options ); if ( err != EXIT_SUCCESS ) { return EXIT_FAILURE; } int state = 0; bool running = true; bool opengl = options.opengl_flag; slop::SelectRectangle* selection = NULL; Window window = None; Window windowmemory = None; std::string xdisplay; if ( options.xdisplay_given ) { xdisplay = options.xdisplay_arg; } else { // If we weren't specifically given a xdisplay, we try // to parse it from environment variables char* display = getenv( "DISPLAY" ); if ( display ) { xdisplay = display; } else { fprintf( stderr, "Warning: Failed to parse environment variable: DISPLAY. Using \":0\" instead.\n" ); xdisplay = ":0"; } } int padding = options.padding_arg; int borderSize = options.bordersize_arg; int tolerance = options.tolerance_arg; float r, g, b, a; err = parseColor( options.color_arg, &r, &g, &b, &a ); if ( err != EXIT_SUCCESS ) { fprintf( stderr, "Error parsing color %s\n", options.color_arg ); return EXIT_FAILURE; } float gracetime; err = sscanf( options.gracetime_arg, "%f", &gracetime ); if ( err != 1 ) { fprintf( stderr, "Error parsing %s as a float for gracetime!\n", options.gracetime_arg ); return EXIT_FAILURE; } bool highlight = options.highlight_flag; bool keyboard = !options.nokeyboard_flag; bool decorations = !options.nodecorations_flag; bool themeon = (bool)options.theme_given; std::string theme = options.theme_arg; #ifdef OPENGL_ENABLED bool shadergiven = (bool)options.shader_given; #endif std::string shader = options.shader_arg; struct timespec start, time; int xoffset = 0; int yoffset = 0; int cx = 0; int cy = 0; int xmem = 0; int ymem = 0; int wmem = 0; int hmem = 0; int minimumsize = options.min_arg; int maximumsize = options.max_arg; bool pressedMemory[4]; double pressedTime[4]; for ( int i=0;i<4;i++ ) { pressedMemory[ i ] = false; pressedTime[ i ] = 0; } std::string format = options.format_arg; bool magenabled = options.magnify_flag; #ifdef OPENGL_ENABLED float magstrength = options.magstrength_arg; if ( options.magpixels_arg < 0 ) { fprintf( stderr, "Error: --magpixels < 0, it's an unsigned integer you twat. Stop trying to underflow me!\n" ); return EXIT_FAILURE; } unsigned int magpixels = (unsigned int)options.magpixels_arg; #endif cmdline_parser_free( &options ); #ifndef OPENGL_ENABLED if ( opengl || themeon || magenabled ) { throw std::runtime_error( "Slop wasn't compiled with OpenGL support, so themes, magnifications, and shaders are disabled! Try compiling it with the CMAKE_OPENGL_SUPPORT set to true." ); } #else // OPENGL_ENABLED if ( ( themeon || magenabled || shadergiven ) && !opengl ) { throw std::runtime_error( "Slop needs --opengl enabled to use themes, shaders, or magnifications." ); } #endif // First we set up the x interface and grab the mouse, // if we fail for either we exit immediately. err = xengine->init( xdisplay.c_str() ); if ( err != EXIT_SUCCESS ) { printSelection( format, true, 0, 0, 0, 0, None ); return EXIT_FAILURE; } if ( !slop::isSelectRectangleSupported() ) { fprintf( stderr, "Error: Your X server doesn't support the XShape extension. There's nothing slop can do about this!\n" ); fprintf( stderr, " Try updating X and making sure you have XExtensions installed. (/usr/lib/libXext.so, /usr/include/X11/extensions/shape.h)\n" ); return EXIT_FAILURE; } err = xengine->grabCursor( slop::Cross, gracetime ); if ( err != EXIT_SUCCESS ) { printSelection( format, true, 0, 0, 0, 0, None ); return EXIT_FAILURE; } if ( keyboard ) { err = xengine->grabKeyboard(); if ( err ) { fprintf( stderr, "Warning: Failed to grab the keyboard. This is non-fatal, keyboard presses might fall through to other applications.\n" ); } } current_utc_time( &start ); double deltatime = 0; double curtime = double( start.tv_sec*1000000000L + start.tv_nsec )/1000000000.f; while ( running ) { current_utc_time( &time ); // "ticking" the xengine makes it process all queued events. xengine->tick(); // If the user presses any key on the keyboard, exit the application. // Make sure at least gracetime has passed before allowing canceling double newtime = double( time.tv_sec*1000000000L + time.tv_nsec )/1000000000.f; deltatime = newtime-curtime; curtime = newtime; double starttime = double( start.tv_sec*1000000000L + start.tv_nsec )/1000000000.f; if ( curtime - starttime > gracetime ) { if ( keyRepeat( XK_Up, curtime, 0.5, &pressedTime[ 0 ], &pressedMemory[ 0 ] ) ) { yoffset -= 1; } if ( keyRepeat( XK_Down, curtime, 0.5, &pressedTime[ 1 ], &pressedMemory[ 1 ] ) ) { yoffset += 1; } if ( keyRepeat( XK_Left, curtime, 0.5, &pressedTime[ 2 ], &pressedMemory[ 2 ] ) ) { xoffset -= 1; } if ( keyRepeat( XK_Right, curtime, 0.5, &pressedTime[ 3 ], &pressedMemory[ 3 ] ) ) { xoffset += 1; } // If we pressed enter we move the state onward. if ( xengine->keyPressed( XK_Return ) ) { // If we're highlight windows, just select the active window. if ( state == 0 ) { state = 1; // If we're making a custom selection, select the custom selection. } else if ( state == 2 ) { state = 3; } } // If we press any key other than the arrow keys or enter key, we shut down! if ( !( xengine->keyPressed( XK_Up ) || xengine->keyPressed( XK_Down ) || xengine->keyPressed( XK_Left ) || xengine->keyPressed( XK_Right ) ) && !( xengine->keyPressed( XK_Return ) ) && ( ( xengine->anyKeyPressed() && keyboard ) || xengine->mouseDown( 3 ) ) ) { printSelection( format, true, 0, 0, 0, 0, None ); fprintf( stderr, "User pressed key. Canceled selection.\n" ); state = -1; running = false; } } // Our adorable little state manager will handle what state we're in. switch ( state ) { default: { break; } case 0: { // If xengine has found a window we're hovering over (or if it changed) // create a rectangle around it so the user knows he/she can click on it. // --but only if the user wants us to if ( window != xengine->m_hoverWindow && tolerance > 0 ) { slop::WindowRectangle t; t.setGeometry( xengine->m_hoverWindow, decorations ); t.applyPadding( padding ); t.applyMinMaxSize( minimumsize, maximumsize ); // Make sure we only apply offsets to windows that we've forcibly removed decorations on. if ( !selection ) { #ifdef OPENGL_ENABLED if ( opengl ) { selection = new slop::GLSelectRectangle( t.m_x, t.m_y, t.m_x + t.m_width, t.m_y + t.m_height, borderSize, highlight, r, g, b, a ); // Haha why is this so hard to cast? ((slop::GLSelectRectangle*)(selection))->setMagnifySettings( magenabled, magstrength, magpixels ); ((slop::GLSelectRectangle*)(selection))->setTheme( themeon, theme ); ((slop::GLSelectRectangle*)(selection))->setShader( shader ); } else { #endif // OPENGL_ENABLED selection = new slop::XSelectRectangle( t.m_x, t.m_y, t.m_x + t.m_width, t.m_y + t.m_height, borderSize, highlight, r, g, b, a ); #ifdef OPENGL_ENABLED } #endif // OPENGL_ENABLED } else { selection->setGeo( t.m_x, t.m_y, t.m_x + t.m_width, t.m_y + t.m_height ); } //window = xengine->m_hoverWindow; // Since WindowRectangle can select different windows depending on click location... window = t.getWindow(); } if ( selection ) { selection->update( deltatime ); } // If the user clicked we move on to the next state. if ( xengine->mouseDown( 1 ) ) { state++; } break; } case 1: { // Set the mouse position of where we clicked, used so that click tolerance doesn't affect the rectangle's position. cx = xengine->m_mousex; cy = xengine->m_mousey; // Make sure we don't have un-seen applied offsets. xoffset = 0; yoffset = 0; // Also remember where the original selection was if ( selection ) { xmem = selection->m_x; ymem = selection->m_y; wmem = selection->m_width; hmem = selection->m_height; } else { xmem = cx; ymem = cy; } state++; break; } case 2: { // It's possible that our selection doesn't exist still, lets make sure it actually gets created here. if ( !selection ) { int sx, sy, ex, ey; constrain( cx, cy, xengine->m_mousex, xengine->m_mousey, padding, minimumsize, maximumsize, &sx, &sy, &ex, &ey ); #ifdef OPENGL_ENABLED if ( opengl ) { selection = new slop::GLSelectRectangle( sx, sy, ex, ey, borderSize, highlight, r, g, b, a ); // Haha why is this so hard to cast? ((slop::GLSelectRectangle*)(selection))->setMagnifySettings( magenabled, magstrength, magpixels ); ((slop::GLSelectRectangle*)(selection))->setTheme( themeon, theme ); ((slop::GLSelectRectangle*)(selection))->setShader( shader ); } else { #endif // OPENGL_ENABLED selection = new slop::XSelectRectangle( sx, sy, ex, ey, borderSize, highlight, r, g, b, a ); #ifdef OPENGL_ENABLED } #endif // OPENGL_ENABLED } windowmemory = window; // If the user has let go of the mouse button, we'll just // continue to the next state. if ( !xengine->mouseDown( 1 ) ) { state++; break; } // Check to make sure the user actually wants to drag for a selection before moving things around. int w = xengine->m_mousex - cx; int h = xengine->m_mousey - cy; if ( ( std::abs( w ) < tolerance && std::abs( h ) < tolerance ) ) { // We make sure the selection rectangle stays on the window we had selected selection->setGeo( xmem, ymem, xmem + wmem, ymem + hmem ); selection->update( deltatime ); xengine->setCursor( slop::Left ); // Make sure window = windowmemory; continue; } // If we're not selecting a window. windowmemory = window; window = None; // We also detect which way the user is pulling and set the mouse icon accordingly. bool x = cx > xengine->m_mousex; bool y = cy > xengine->m_mousey; if ( ( selection->m_width <= 1 && selection->m_height <= 1 ) || ( minimumsize == maximumsize && minimumsize != 0 && maximumsize != 0 ) ) { xengine->setCursor( slop::Cross ); } else if ( !x && !y ) { xengine->setCursor( slop::LowerRightCorner ); } else if ( x && !y ) { xengine->setCursor( slop::LowerLeftCorner ); } else if ( !x && y ) { xengine->setCursor( slop::UpperRightCorner ); } else if ( x && y ) { xengine->setCursor( slop::UpperLeftCorner ); } // Apply padding and minimum size adjustments. int sx, sy, ex, ey; constrain( cx, cy, xengine->m_mousex, xengine->m_mousey, padding, minimumsize, maximumsize, &sx, &sy, &ex, &ey ); // Set the selection rectangle's dimensions to mouse movement. selection->setGeo( sx + xoffset, sy + yoffset, ex, ey ); selection->update( deltatime ); break; } case 3: { int x, y, w, h; // Exit the utility after this state runs once. running = false; // We pull the dimensions and positions from the selection rectangle. // The selection rectangle automatically converts the positions and // dimensions to absolute coordinates when we set them earilier. x = selection->m_x; y = selection->m_y; w = selection->m_width; h = selection->m_height; // Delete the rectangle, which will remove it from the screen. delete selection; // Make sure if no window was specifically specified, that we output the root window. Window temp = window; if ( temp == None ) { temp = xengine->m_root; } // Print the selection :) printSelection( format, false, x, y, w, h, temp ); break; } } // This sleep is required because drawing the rectangles is a very expensive task that acts really weird with Xorg when called as fast as possible. // 0.01 seconds usleep( 10000 ); } xengine->releaseCursor(); xengine->releaseKeyboard(); // Try to process any last-second requests. //xengine->tick(); // Clean up global classes. delete xengine; // Sleep for 0.05 seconds to ensure everything was cleaned up. (Without this, slop's window often shows up in screenshots.) usleep( 50000 ); // If we canceled the selection, return error. if ( state == -1 ) { return EXIT_FAILURE; } return EXIT_SUCCESS; }