get_window_extentsT_get_window_extentsGetWindowExtentsGetWindowExtentsget_window_extents (算子)

名称

get_window_extentsT_get_window_extentsGetWindowExtentsGetWindowExtentsget_window_extents — 有关窗口大小和位置的信息。

签名

get_window_extents( : : WindowHandle : Row, Column, Width, Height)

描述

get_window_extentsget_window_extentsGetWindowExtentsGetWindowExtentsGetWindowExtentsget_window_extents returns the position of the upper left corner, as well as width and height of the output window.

注意

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_extentsget_window_extentsGetWindowExtentsGetWindowExtentsGetWindowExtentsget_window_extents may change cause of side effects.

执行信息

多线程类型：可重入（与非独占算子并行运行）。
多线程作用域：全局（可从任何线程调用）。
未采用并行化处理。

参数

WindowHandleWindowHandleWindowHandleWindowHandlewindowHandlewindow_handle (输入控制) window → (handle)

窗口句柄。

RowRowRowRowrowrow (输出控制) rectangle.origin.y → (integer)

Row index of upper left corner of the window.

ColumnColumnColumnColumncolumncolumn (输出控制) rectangle.origin.x → (integer)

Column index of upper left corner of the window.

WidthWidthWidthWidthwidthwidth (输出控制) rectangle.extent.x → (integer)

Window width.

HeightHeightHeightHeightheightheight (输出控制) rectangle.extent.y → (integer)

Window height.

示例（HDevelop）

open_window(100,100,200,200,'root','visible','',WindowHandle)
fwrite_string(FileHandle, 'Move the window with the mouse!')
fnew_line(FileHandle)
repeat
get_mbutton(WindowHandle,_,_,Button)
get_window_extents(WindowHandle,Row,Column,Width,Height)
fwrite_string(FileHandle, ['(',Row,',',Column,')'])
fnew_line(FileHandle)
until(Button == 4)

示例（C）

open_window(100,100,200,200,"root","visible","",&WindowHandle);
fwrite_string(FileHandle,"Move the window with the mouse!");
fnew_line(FileHandle);
create_tuple(&String,1);
do
{
  get_mbutton(WindowHandle,NULL,NULL,&Button);
  get_window_extents(WindowHandle,&Row,&Column,&Width,&Height);
  sprintf(buf,"Row %d Col %d ",Row,Column);
  set_s(String,buf,0);
  T_fwrite_string(FileHandle, String);
  fnew_line(FileHandle);
}
while(Button < 4);

示例（HDevelop）

open_window(100,100,200,200,'root','visible','',WindowHandle)
fwrite_string(FileHandle, 'Move the window with the mouse!')
fnew_line(FileHandle)
repeat
get_mbutton(WindowHandle,_,_,Button)
get_window_extents(WindowHandle,Row,Column,Width,Height)
fwrite_string(FileHandle, ['(',Row,',',Column,')'])
fnew_line(FileHandle)
until(Button == 4)

示例（HDevelop）

open_window(100,100,200,200,'root','visible','',WindowHandle)
fwrite_string(FileHandle, 'Move the window with the mouse!')
fnew_line(FileHandle)
repeat
get_mbutton(WindowHandle,_,_,Button)
get_window_extents(WindowHandle,Row,Column,Width,Height)
fwrite_string(FileHandle, ['(',Row,',',Column,')'])
fnew_line(FileHandle)
until(Button == 4)

示例（HDevelop）

open_window(100,100,200,200,'root','visible','',WindowHandle)
fwrite_string(FileHandle, 'Move the window with the mouse!')
fnew_line(FileHandle)
repeat
get_mbutton(WindowHandle,_,_,Button)
get_window_extents(WindowHandle,Row,Column,Width,Height)
fwrite_string(FileHandle, ['(',Row,',',Column,')'])
fnew_line(FileHandle)
until(Button == 4)

结果

If the window is valid get_window_extentsget_window_extentsGetWindowExtentsGetWindowExtentsGetWindowExtentsget_window_extents 返回 2 ( H_MSG_TRUE )。如有必要，则抛出异常。

可能的前趋

open_windowopen_windowOpenWindowOpenWindowOpenWindowopen_window, set_drawset_drawSetDrawSetDrawSetDrawset_draw, set_colorset_colorSetColorSetColorSetColorset_color, set_coloredset_coloredSetColoredSetColoredSetColoredset_colored, set_line_widthset_line_widthSetLineWidthSetLineWidthSetLineWidthset_line_width

另见

set_window_extentsset_window_extentsSetWindowExtentsSetWindowExtentsSetWindowExtentsset_window_extents, open_windowopen_windowOpenWindowOpenWindowOpenWindowopen_window

模块

基础

算子