Unsolved Qt 5.15 Multitouch issue
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Hello everybody.
I have a strange issue that I don't understand and maybe you can help me.Qt 5.15 compile with multiotuch support.
Qt Gui: Accessibility .......................... yes FreeType ............................... yes Using system FreeType ................ yes HarfBuzz ............................... no Using system HarfBuzz ................ no Fontconfig ............................. yes Image formats: GIF .................................. yes ICO .................................. yes JPEG ................................. yes Using system libjpeg ............... yes PNG .................................. yes Using system libpng ................ yes Text formats: HtmlParser ........................... yes CssParser ............................ yes OdfWriter ............................ yes MarkdownReader ....................... yes Using system libmd4c ............... no MarkdownWriter ....................... yes EGL .................................... yes OpenVG ................................. no OpenGL: Desktop OpenGL ....................... no OpenGL ES 2.0 ........................ yes OpenGL ES 3.0 ........................ yes OpenGL ES 3.1 ........................ yes OpenGL ES 3.2 ........................ yes Vulkan ................................. no Session Management ..................... yes Features used by QPA backends: evdev .................................. yes libinput ............................... no INTEGRITY HID .......................... no mtdev .................................. yes tslib .................................. yes xkbcommon .............................. yes X11 specific: XLib ................................. yes XCB Xlib ............................. yes EGL on X11 ........................... no xkbcommon-x11 ........................ yes QPA backends: DirectFB ............................... yes EGLFS .................................. yes EGLFS details: EGLFS OpenWFD ........................ no EGLFS i.Mx6 .......................... no EGLFS i.Mx6 Wayland .................. no EGLFS RCAR ........................... no EGLFS EGLDevice ...................... yes EGLFS GBM ............................ yes EGLFS VSP2 ........................... no EGLFS Mali ........................... no EGLFS Raspberry Pi ................... no EGLFS X11 ............................ no LinuxFB ................................ yes VNC .................................... yes Qt Sql: SQL item models ........................ yes Qt Widgets: GTK+ ................................... no Styles ................................. Fusion Windows Qt PrintSupport: CUPS ................................... no Qt Sql Drivers: DB2 (IBM) .............................. no InterBase .............................. no MySql .................................. yes OCI (Oracle) ........................... no ODBC ................................... no PostgreSQL ............................. no SQLite2 ................................ no SQLite ................................. no Using system provided SQLite ......... no TDS (Sybase) ........................... no Qt Testlib: Tester for item models ................. yes
The examples in the widgets secction works fine. ( PinchZoom, FingerPaint and Knobs ).
But the issue is when I create a stupid app with 4 buttons and it's impossible to press two of them at the same time.
I enable the "qt.qpa.input" option to see what happen.qt.qpa.input: udev device discovery for type QFlags<QDeviceDiscovery::QDeviceType>(Device_Touchpad|Device_Touchscreen) qt.qpa.input: Found matching devices ("/dev/input/event6") qt.qpa.input: evdevtouch: Adding device at /dev/input/event6 qt.qpa.input: evdevtouch: Using device /dev/input/event6 qt.qpa.input: Adding mouse at /dev/input/event6 qt.qpa.input: create mouse handler for "/dev/input/event6" "" qt.qpa.input: evdevtouch: /dev/input/event6: Protocol type B (mtdev) (multi), filtered=no qt.qpa.input: evdevtouch: /dev/input/event6: min X: 0 max X: 4095 qt.qpa.input: evdevtouch: /dev/input/event6: min Y: 0 max Y: 4095 qt.qpa.input: evdevtouch: /dev/input/event6: min pressure: 0 max pressure: 0 qt.qpa.input: evdevtouch: /dev/input/event6: device name: DATA MODUL easyMaxTouch
Qt recognize the device as Touch device and also it detects as MultiTouch Protocol type B.
So far, so good. But at this points, when I try to execute a stupid App with four buttons, just one can press.
What is missing or what is wrong ?
Thank you ver much in advance. -
More information.....
# evtest /dev/input/event6 Input driver version is 1.0.1 Input device ID: bus 0x3 vendor 0x7374 product 0x1252 version 0x111 Input device name: "DATA MODUL easyMaxTouch" Supported events: Event type 0 (EV_SYN) Event type 1 (EV_KEY) Event code 330 (BTN_TOUCH) Event type 3 (EV_ABS) Event code 0 (ABS_X) Value 828 Min 0 Max 4095 Resolution 20 Event code 1 (ABS_Y) Value 1144 Min 0 Max 4095 Resolution 26 Event code 47 (ABS_MT_SLOT) Value 0 Min 0 Max 15 Event code 53 (ABS_MT_POSITION_X) Value 0 Min 0 Max 4095 Resolution 20 Event code 54 (ABS_MT_POSITION_Y) Value 0 Min 0 Max 4095 Resolution 26 Event code 57 (ABS_MT_TRACKING_ID) Value 0 Min 0 Max 65535 Properties: Property type 1 (INPUT_PROP_DIRECT) Testing ... (interrupt to exit)
Maybe, can help.