Child window - %ch

In this section:

• Caption - %ca[title]
• Window handle - %hw
• Control handle - %lc
• Leave window open - %lw[option]
• Start-up call-back - %sc
• Child window - %ch
• Control variable - %cv
• Create MDI frame - %fr
• Attach window - %aw
• Drag and drop - %dr
• Set window position - %sp
• Set window size - %sz
• Window style - %ww[options]
• Background colour - %bg[colour]
• ClearWin window - %N.Mcw[options]
• Property sheet - %Nps
• Property sheet child - %sh
• Closure control format - %cc
• Delayed auto recall - %dl
• Wallpaper - %wp[bitmap]
• User window - %uw[class_name]
• Screen saver - %sv
• Disable screen saver - %ns
• Taskbar icon - %ti

%ch (Child Window) inserts a child window created by %`lw in a previous call to winio@. The format takes a single INTEGER argument that is the control variable of the child window.

Child windows are automatically restored on top of their parent and are constrained to lie within it. If they have a caption (as they will by default) they can be moved by the user. Child windows created in this way are fixed in size and location (relative to the parent window). Here is a simple example:

   INTEGER control_var
   i=winio@('%ww[no_frame]%`lw',control_var)
   i=winio@('This is a child window%2nl%ch',control_var)