I've wrote a "grid" gadget designed to replace the table control. The gadget is flicker-free since it draws into an offscreen buffer first. It supports multiple types of cell including a boolean type implemented using a checkbox control. My problem is that I want to use CtlDrawControl() to draw the checkbox in a way that will work between PalmOS 2.0 to 3.5. Currently, I have a checkbox in my form that is set to "nonusable". And then when I need to draw, I do (treat as pseudo-code): winH = WinGetDrawWindow(); WinSetDrawWindow(offscreen_win); CtlSetUsable(ctl, true); CtlSetEnable(ctl, true); FrmSetObjectBounds(form, ctlID, &offscreen_rect); CtlSetValue(ctl, value); CtlDrawControl(ctl); CtlSetUsable(ctl, false); CtlSetEnable(ctl, false); WinSetDrawWindow(winH); The method seems to work on 2.0 and 3.1 debug ROMSs but I want to know if any problems might arise on future versions of PalmOS? I didn't just allocate a ControlType structure since I assume these will change in size between versions of PalmOS. Plus fiddling with structure internals would be bad. (It would be nice to have a CtlAllocControl() that would create a control w/o the need to insert it into a form.) I'm only on the digest of this list so please include me in reply headers. Source code is available but it is GPL'ed so I didn't attach it so no one gets tainted unless they want to. Tom -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palm.com/devzone/mailinglists.html
