Information about a window's size and position.
get_window_extents returns the position of the upper left corner, as well as width and height of the output window.
Size and position of a window may be modified by the window manager, without explicit instruction in the program. Therefore the values which are returned by get_window_extents may change cause of side effects.
|
WindowHandle (input_control) |
window -> integer |
| Window identifier. | |
|
Row (output_control) |
rectangle.origin.y -> integer |
| Row index of upper left corner of the window. | |
|
Column (output_control) |
rectangle.origin.x -> integer |
| Column index of upper left corner of the window. | |
|
Width (output_control) |
rectangle.extent.x -> integer |
| Window width. | |
|
Height (output_control) |
rectangle.extent.y -> integer |
| Window height. | |
open_window(100,100,200,200,'root','visible','',WindowHandle)
fwrite_string('Move the window with the mouse!')
fnew_line()
repeat()
get_mbutton(WindowHandle,_,_,Button)
get_window_extents(WindowHandle,Row,Column,Width,Height)
fwrite(['('Row,',',Column,')'])
fnew_line()
until(Button = 4).If the window is valid get_window_extents returns 2 (H_MSG_TRUE). If necessary an exception handling is raised.
get_window_extents is reentrant, local, and processed without parallelization.
open_window, set_draw, set_color, set_colored, set_line_width, open_textwindow
set_window_extents, open_window, open_textwindow
System
