BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Solved - error 87, the parameter is incorrect          BorlandTalk.com Forum Index -> Delphi Graphics View previous topic :: View next topic   Author Message Russ Holcomb Guest Posted: Mon Aug 29, 2005 2:25 pm    Post subject: Solved - error 87, the parameter is incorrect We spent a lot of time trying to track down the elusive error 87. By spiting out log files we were eventually able to track it down to a windows error in the CreateDIBSection api call. Our app HAD a speedbutton on it that under certain conditions would flash it's image to let people know something needed attention. This was handled by loading the image from a resource file every 0.750 seconds or so. This caused no problems as long as the application was not minimized. If it was minimized, after some unknown and not consistent amount of time we would get the error 87 message. Our log files showed us that after the period of time the 2 pointers being passed into the api were each returning 0. Thus the incorrect parameter. Our only guess as to what is going on is that the minimized app is given low GDI priority and this is causing the problem. Our solution, we no longer flash the image, it now just has 2 states and they don't even change if minimized. 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