get_mposition — Query the mouse position.
get_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 modfier keys is returned as well. If no mouse button is pressed, get_mposition returns 0 in Button, even if a modifier key is pressed. The following values are assigned to the individual buttons and keys:
The sum of the values for all pressed buttons/keys is returned in Button.
The origin of the coordinate system is located in the left upper corner of the window. For graphics windows the coordinates Row and Column are expressed with consideration of the current image part (see set_part).
If subpixel accurate image coordinates are required, you can use the operator get_mposition_sub_pix.
get_mposition fails (returns FAIL) if the mouse pointer is not located within the window. In this case, no values are returned.
Row coordinate of the mouse cursor in the image coordinate system.
Column coordinate of the mouse cursor in the image coordinate system.
Mouse button(s) pressed or 0.
get_mposition returns the value 2 (H_MSG_TRUE). If the mouse pointer is not located within the window, 5 (H_MSG_FAIL) is returned.
get_mbutton, get_mposition_sub_pix, get_mbutton_sub_pix