Hello Lazarus-List, Thursday, April 22, 2010, 5:41:37 PM, you wrote:
MS> So what does SendMessage do in GTK and what is the difference between MS> PostMessage and SendMessage ? (AFAIK, in Delphi and Lazarus-Windows MS> there is none (but performance), if the target handle is associated to MS> the same process.) The documentation and the wiki does not seem to MS> provide this information. As far as I know (and I could be wrong) LCL SendMessage only handles (passes) messages that it could understand and WM_COPYDATA is not one of them, while Delphi SendMessage is just exactly the same as Windows.SendMessage. So, LCL.SendMessage is a compatibility layer that transform the windows message style in an operation over the current widgetset. In GTK a message like WM_SHOW will be "converted" in a sequence of GTK operations to show or hide a window/control. This way inside an application there is (or better should not be) any difference to the application running in Windows, GTK, etc... Of course maybe is reasonable to allow plain SendMessage (LCL.SendMessage) to send a plain (whichever) message when the target is not an LCL handle :-? in Windows platform, but them a lot of posts like WM_COPYDATA works in Windows but fails in Linux will fill the bugtracker. -- Best regards, José -- _______________________________________________ Lazarus mailing list [email protected] http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
