Operator Reference

HALCON Operator Reference / Graphics / Mouse

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send_mouse_drag_eventT_send_mouse_drag_eventSendMouseDragEventSendMouseDragEventsend_mouse_drag_event (Operator)

send_mouse_drag_eventT_send_mouse_drag_eventSendMouseDragEventSendMouseDragEventsend_mouse_drag_event — Send an event to a buffer window signaling a mouse drag event.

Signature

send_mouse_drag_event( : : WindowHandle, Row, Column, Button : Processed)

Herror T_send_mouse_drag_event(const Htuple WindowHandle, const Htuple Row, const Htuple Column, const Htuple Button, Htuple* Processed)

void SendMouseDragEvent(const HTuple& WindowHandle, const HTuple& Row, const HTuple& Column, const HTuple& Button, HTuple* Processed)

HString HWindow::SendMouseDragEvent(const HTuple& Row, const HTuple& Column, Hlong Button) const

HString HWindow::SendMouseDragEvent(Hlong Row, Hlong Column, Hlong Button) const

static HString HDrawingObject::SendMouseDragEvent(const HWindow& WindowHandle, const HTuple& Row, const HTuple& Column, Hlong Button)

static HString HDrawingObject::SendMouseDragEvent(const HWindow& WindowHandle, Hlong Row, Hlong Column, Hlong Button)

static void HOperatorSet.SendMouseDragEvent(HTuple windowHandle, HTuple row, HTuple column, HTuple button, out HTuple processed)

string HWindow.SendMouseDragEvent(HTuple row, HTuple column, int button)

string HWindow.SendMouseDragEvent(int row, int column, int button)

static string HDrawingObject.SendMouseDragEvent(HWindow windowHandle, HTuple row, HTuple column, int button)

static string HDrawingObject.SendMouseDragEvent(HWindow windowHandle, int row, int column, int button)

def send_mouse_drag_event(window_handle: HHandle, row: Union[float, int], column: Union[float, int], button: int) -> str

Description

send_mouse_drag_eventsend_mouse_drag_eventSendMouseDragEventSendMouseDragEventsend_mouse_drag_event sends an event at the position (RowRowRowrowrow, ColumnColumnColumncolumncolumn) to the buffer window WindowHandleWindowHandleWindowHandlewindowHandlewindow_handle, signaling that the mouse button encoded by ButtonButtonButtonbuttonbutton is been dragged. Please refer to get_mbuttonget_mbuttonGetMbuttonGetMbuttonget_mbutton to see how to encode ButtonButtonButtonbuttonbutton.

If the event could be processed, send_mouse_drag_eventsend_mouse_drag_eventSendMouseDragEventSendMouseDragEventsend_mouse_drag_event returns 'true'"true""true""true""true" in ProcessedProcessedProcessedprocessedprocessed. If no action for the event could be determined (e.g., because there is no drawing object below the mouse position), 'false'"false""false""false""false" is returned in ProcessedProcessedProcessedprocessedprocessed. In this case the caller may determine an action for the event.

The operators send_mouse_down_eventsend_mouse_down_eventSendMouseDownEventSendMouseDownEventsend_mouse_down_event, send_mouse_up_eventsend_mouse_up_eventSendMouseUpEventSendMouseUpEventsend_mouse_up_event, send_mouse_drag_eventsend_mouse_drag_eventSendMouseDragEventSendMouseDragEventsend_mouse_drag_event and send_mouse_double_click_eventsend_mouse_double_click_eventSendMouseDoubleClickEventSendMouseDoubleClickEventsend_mouse_double_click_event are the only means to manipulate drawing objects in buffer windows.

Attention

send_mouse_drag_eventsend_mouse_drag_eventSendMouseDragEventSendMouseDragEventsend_mouse_drag_event depends on the library libcanvas, which might not be available on embedded systems.

Execution Information

• Multithreading type: reentrant (runs in parallel with non-exclusive operators).
• Multithreading scope: global (may be called from any thread).
• Processed without parallelization.

Parameters

WindowHandleWindowHandleWindowHandlewindowHandlewindow_handle (input_control)  window → HWindow, HTupleHHandleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)

Window handle of the buffer window.

RowRowRowrowrow (input_control)  point.y → HTupleUnion[float, int]HTupleHtuple (integer / real) (int / long / double) (Hlong / double) (Hlong / double)

Row coordinate of the mouse cursor in the image coordinate system.

ColumnColumnColumncolumncolumn (input_control)  point.x → HTupleUnion[float, int]HTupleHtuple (integer / real) (int / long / double) (Hlong / double) (Hlong / double)

Column coordinate of the mouse cursor in the image coordinate system.

ButtonButtonButtonbuttonbutton (input_control)  integer → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)

Mouse button(s) pressed.

ProcessedProcessedProcessedprocessedprocessed (output_control)  string → HTuplestrHTupleHtuple (string) (string) (HString) (char*)

'true', if HALCON processed the event.

Result

send_mouse_drag_eventsend_mouse_drag_eventSendMouseDragEventSendMouseDragEventsend_mouse_drag_event returns the value 2 ( H_MSG_TRUE) if the window handle WindowHandleWindowHandleWindowHandlewindowHandlewindow_handle corresponds to a window of valid type, and the event is properly encoded. Otherwise, an exception is raised.

Possible Predecessors

open_windowopen_windowOpenWindowOpenWindowopen_window

See also

send_mouse_up_eventsend_mouse_up_eventSendMouseUpEventSendMouseUpEventsend_mouse_up_event, send_mouse_down_eventsend_mouse_down_eventSendMouseDownEventSendMouseDownEventsend_mouse_down_event, send_mouse_double_click_eventsend_mouse_double_click_eventSendMouseDoubleClickEventSendMouseDoubleClickEventsend_mouse_double_click_event, open_windowopen_windowOpenWindowOpenWindowopen_window

Module

Foundation

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ClassesClasses | | Operators