Window Messages Help

[kinglestat]

How is it possible to register user created messages for the window message system so that 2 applications can communicate together? And how to capture them in PB? Can't find any examples to help me out

[Danilo]

How is it possible to register user created messages for the window message system so that 2 applications can communicate together? And how to capture them in PB? Can't find any examples to help me out

Just use
msg = RegisterWindowMessage_(@"MyUniqueString")
and
PostMessage_(#HWND_BROADCAST,msg, ...)

Code: Select all

If OpenWindow(1, 0, 0, 800, 600, "Window", #PB_Window_SystemMenu | #PB_Window_ScreenCentered)

    ListViewGadget(0,10,10,780,580)

    myMessage = RegisterWindowMessage_(@"My.App.Message.1")

    PostMessage_(#HWND_BROADCAST,myMessage,12,24)

    Repeat
        Event = WaitWindowEvent()
        Select Event
            Case #PB_Event_CloseWindow
                Quit = #True
            Case myMessage
                msg$ = "STRING MESSAGE (RegisterWindowMessage): "
                AddGadgetItem(0,-1,msg$+Str(Event)+" ($"+Hex(Event)+") - wParam: "+Str(EventwParam())+" ($"+Hex(EventwParam())+") - lParam: "+Str(EventlParam())+" ($"+Hex(EventlParam())+")")
        EndSelect
    Until Quit = #True
EndIf

Start this code multiple times, all of the windows get the message.

[Nico]

There is a bug, on window x64 i have one message, on window x86 i have two (same) messages!

[IdeasVacuum]

You might consider using shared memory (File Mapping):
http://www.purebasic.fr/english/viewtop ... 12&t=51527

[netmaestro]

The WM_COPYDATA message is ideal for this.