http://www.purebasic.com
https://www.purebasic.fr/english/
As RSBasic had pointed out, you'd have to implement a callback to intercept messages that are not supported by PureBasic natively; and that too would provide only an OS-specific solution. However, you might also consider using PureBasic's very own PostEvent() function, which is cross-platform:Osmdesat wrote:Is it possible to catch user window messages using WaitWindowEvent function, i.e. messages with uMsg >= WM_USER posted to my window?
Maybe I'm misunderstanding, but how can PostEvent() let my app know that a #WM_NOTIFY message has occurred? AFAIK, only a callback can detect that sort of thing.Osmdesat wrote:PostEvent() function solves it without need of callback
Code: Select all
;-TOP
; ***************************************************************************************
;-Begin Of SendEvent
; Comment : SendEvent
; Author : mk-soft
; Version : v1.06
; Create : unknown
; Update : 07.08.2016
;- Structure
Structure udtSendEvent
Signal.i
Result.i
*pData
EndStructure
; ---------------------------------------------------------------------------------------
Procedure SendEvent(Event, Window = 0, Object = 0, EventType = 0, pData = 0, Semaphore = 0)
Protected MyEvent.udtSendEvent, result
With MyEvent
If Semaphore
\Signal = Semaphore
Else
\Signal = CreateSemaphore()
EndIf
\pData = pData
PostEvent(Event, Window, Object, EventType, @MyEvent)
WaitSemaphore(\Signal)
result = \Result
If Semaphore = 0
FreeSemaphore(\Signal)
EndIf
EndWith
ProcedureReturn result
EndProcedure
; ---------------------------------------------------------------------------------------
Procedure SendEventData(*MyEvent.udtSendEvent)
ProcedureReturn *MyEvent\pData
EndProcedure
; ---------------------------------------------------------------------------------------
Procedure DispatchEvent(*MyEvent.udtSendEvent, result)
*MyEvent\Result = result
SignalSemaphore(*MyEvent\Signal)
EndProcedure
;- End Of SendEvent
; ***************************************************************************************
;- Example
CompilerIf #PB_Compiler_IsMainFile
EnableExplicit
; ***************************************************************************************
;- Memory string helper
Procedure AllocateString(String.s)
Protected *mem.string
*mem = AllocateStructure(string)
If *mem
*mem\s = String
EndIf
ProcedureReturn *mem
EndProcedure
; ---------------------------------------------------------------------------------------
Procedure.s FreeString(*mem.string)
Protected result.s
If *mem
result = *mem\s
FreeStructure(*mem)
EndIf
ProcedureReturn result
EndProcedure
; ***************************************************************************************
Enumeration
#Window
EndEnumeration
;- Constants
Enumeration #PB_Event_FirstCustomValue
#My_Event_Messagebox
#My_Event_Inputbox
EndEnumeration
Procedure Thread1(Null)
Debug "Init Thread 1"
Protected result
Repeat
Delay(500)
result = SendEvent(#My_Event_Messagebox, 0, 0, 0, Random(100))
Select result
Case #PB_MessageRequester_Yes
Debug "#PB_MessageRequester_Yes"
Case #PB_MessageRequester_No
Debug "#PB_MessageRequester_No"
Case #PB_MessageRequester_Cancel
Debug "#PB_MessageRequester_Cancel"
EndSelect
Until result = #PB_MessageRequester_Cancel
Debug "Exit Thread 1"
EndProcedure
Procedure Thread2(Null)
Debug "Init Thread 2"
Protected result, text.s
Repeat
Delay(500)
result = SendEvent(#My_Event_Inputbox, 0, 0, 0, Random(100))
text = FreeString(result)
Debug text
Until text = ""
Debug "Exit Thread 2"
EndProcedure
Procedure Main()
Protected exit, th1, th2
Protected MyEvent, value, result, text.s
If OpenWindow(#Window, 0, 0, 800, 600, "WindowTitle", #PB_Window_MinimizeGadget|#PB_Window_ScreenCentered)
th1 = CreateThread(@Thread1(), #Null)
Repeat
Select WaitWindowEvent()
Case #PB_Event_CloseWindow
Break
Case #PB_Event_Gadget
Case #My_Event_Messagebox
MyEvent = EventData()
value = SendEventData(MyEvent)
result = MessageRequester("Thread 1", "What happens next?" + #LF$ + "(Code " + value + ")", #PB_MessageRequester_YesNoCancel)
DispatchEvent(MyEvent, result)
If result = #PB_MessageRequester_Cancel
th2 = CreateThread(@Thread2(), #Null)
EndIf
Case #My_Event_Inputbox
MyEvent = EventData()
text = InputRequester("Thread 2", "Name:", "")
result = AllocateString(text)
DispatchEvent(MyEvent, result)
EndSelect
ForEver
If IsThread(th1)
KillThread(th1)
EndIf
If IsThread(th2)
KillThread(th2)
EndIf
EndIf
EndProcedure : Main()
CompilerEndIf