Operator Reference

HALCON Operator Reference / Graphics / Mouse

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get_mpositionT_get_mpositionGetMpositionGetMpositionget_mposition (Operator)

get_mpositionT_get_mpositionGetMpositionGetMpositionget_mposition — Query the mouse position.

Signature

get_mposition( : : WindowHandle : Row, Column, Button)

Herror T_get_mposition(const Htuple WindowHandle, Htuple* Row, Htuple* Column, Htuple* Button)

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

void HWindow::GetMposition(Hlong* Row, Hlong* Column, Hlong* Button) const

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

void HWindow.GetMposition(out int row, out int column, out int button)

def get_mposition(window_handle: HHandle) -> Tuple[int, int, int]

Description

get_mpositionget_mpositionGetMpositionGetMpositionget_mposition returns the pixel accurate image coordinates of the mouse pointer in the output window and the mouse button pressed. These values are returned regardless of the state of the mouse buttons (pressed or not pressed). If at least one mouse button is pressed, the state of the modifier keys is returned as well. If no mouse button is pressed, get_mpositionget_mpositionGetMpositionGetMpositionget_mposition returns 0 in ButtonButtonButtonbuttonbutton, even if a modifier key is pressed. The following values are assigned to the individual buttons and keys:

0:

No button,

1:

Left button,

2:

Middle button,

4:

Right button,

8:

Shift key,

16:

Ctrl key,

32:

Alt key.

The sum of the values for all pressed buttons/keys is returned in ButtonButtonButtonbuttonbutton.

The origin of the coordinate system is located in the left upper corner of the window. For graphics windows the coordinates RowRowRowrowrow and ColumnColumnColumncolumncolumn are expressed with consideration of the current image part (see set_partset_partSetPartSetPartset_part).

If subpixel accurate image coordinates are required, you can use the operator get_mposition_sub_pixget_mposition_sub_pixGetMpositionSubPixGetMpositionSubPixget_mposition_sub_pix.

Attention

get_mpositionget_mpositionGetMpositionGetMpositionget_mposition fails (returns 5 ( H_MSG_FAIL) ) if the mouse pointer is not located within the window. In this case, no values are returned.

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.

RowRowRowrowrow (output_control)  point.y → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)

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

ColumnColumnColumncolumncolumn (output_control)  point.x → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)

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

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

Mouse button(s) pressed or 0.

Result

get_mpositionget_mpositionGetMpositionGetMpositionget_mposition returns the value 2 ( H_MSG_TRUE) . If the mouse pointer is not located within the window, 5 ( H_MSG_FAIL) is returned.

Possible Predecessors

open_windowopen_windowOpenWindowOpenWindowopen_window

Alternatives

get_mbuttonget_mbuttonGetMbuttonGetMbuttonget_mbutton, get_mposition_sub_pixget_mposition_sub_pixGetMpositionSubPixGetMpositionSubPixget_mposition_sub_pix, get_mbutton_sub_pixget_mbutton_sub_pixGetMbuttonSubPixGetMbuttonSubPixget_mbutton_sub_pix

See also

open_windowopen_windowOpenWindowOpenWindowopen_window

Module

Foundation

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ClassesClasses | | Operators