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RichEdit OleCallback.ahk
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;=========================================
; Name: RichEdit OleCallback
; Namespace: RichEdit
; Authors: just me & DigiDon
; Description: IRichEditOleCallback interface AHK implementation for the RichEdit control
;=========================================
;
;=========================================
;RE_SetOleCallback
;Need to call this function just after creation of the RichEdit control
;HRE - Handle of the RichEdit Control
;ex: RE_SetOleCallback(RE2.HWND)
;Specify your contextmenu in IREOleCB_GetContextMenu() if you have one because it won't be called otherwise
;and disable existing dropfiles special GUI label for the RichEdit Control
;Then you can start dragging and dropping any document into the RichEdit field.
;=========================================
RE_SetOleCallback(HRE) {
; EM_SETOLECALLBACK = 0x0446
SendMessage, 0x0446 , 0, % IREOleCB_Create() , , ahk_id %HRE%
If (ErrorLevel = "FAIL") || (ErrorLevel = 0) {
MsgBox, 16, %A_ThisFunc%, ERROR: %ErrorLevel%!
Return False
}
Return True
}
; ================================================================================================================================
; IRichEditOleCallback -> msdn.microsoft.com/en-us/library/windows/desktop/bb774308(v=vs.85).aspx
; ================================================================================================================================
IREOleCB_Create() {
Static VTBL := [RegisterCallback("IREOleCB_QueryInterface")
, RegisterCallback("IREOleCB_AddRef")
, RegisterCallback("IREOleCB_Release")
, RegisterCallback("IREOleCB_GetNewStorage")
, RegisterCallback("IREOleCB_GetInPlaceContext")
, RegisterCallback("IREOleCB_ShowContainerUI")
, RegisterCallback("IREOleCB_QueryInsertObject")
, RegisterCallback("IREOleCB_DeleteObject")
, RegisterCallback("IREOleCB_QueryAcceptData")
, RegisterCallback("IREOleCB_ContextSensitiveHelp")
, RegisterCallback("IREOleCB_GetClipboardData")
, RegisterCallback("IREOleCB_GetDragDropEffect")
, RegisterCallback("IREOleCB_GetContextMenu")]
Static HeapSize := A_PtrSize * 20 ; VTBL pointer + 13 method pointers + 4 unused pointers + reference count + HEAP handle
Static HeapOffset := A_PtrSize * 19 ; offset to store the heap handle within the heap
Heap := DllCall("HeapCreate", "UInt", 0x05, "Ptr", 0, "Ptr", 0, "UPtr")
IREOleCB := DllCall("HeapAlloc", "Ptr", Heap, "UInt", 0x08, "Ptr", HeapSize, "UPtr")
Addr := IREOleCB
Addr := NumPut(Addr + A_PtrSize, Addr + 0, "UPtr")
For Each, CB In VTBL
Addr := NumPut(CB, Addr + 0, "UPtr")
NumPut(Heap, IREOleCB + HeapOffset, "UPtr")
Return IREOleCB
}
; --------------------------------------------------------------------------------------------------------------------------------
; IUnknown::QueryInterface
; --------------------------------------------------------------------------------------------------------------------------------
IREOleCB_QueryInterface(IREOleCB, REFIID, ByRef IFPtr) {
OutputDebug, %A_ThisFunc%
Return 0 ; S_OK
}
; --------------------------------------------------------------------------------------------------------------------------------
; IUnknown::AddRef
; --------------------------------------------------------------------------------------------------------------------------------
IREOleCB_AddRef(IREOleCB) {
Static RefOffset := A_PtrSize * 18
OutputDebug, %A_ThisFunc%
NumPut(RefCount := NumGet(IREOleCB + RefOffset, "UInt") + 1, IREOleCB + RefOffset, "UInt")
Return RefCount
}
; --------------------------------------------------------------------------------------------------------------------------------
; IUnknown::Release
; --------------------------------------------------------------------------------------------------------------------------------
IREOleCB_Release(IREOleCB) {
Static RefOffset := A_PtrSize * 18
, HeapOffset := A_PtrSize * 19
OutputDebug, %A_ThisFunc%
NumPut(RefCount := NumGet(IREOleCB + RefOffset, "UInt") - 1, IREOleCB + RefOffset, "UInt")
If (RefCount = 0) {
Heap := NumGet(IREOleCB + HeapOffset, "UPtr")
DllCall("HeapDestroy", "Ptr", Heap)
}
Return RefCount
}
; --------------------------------------------------------------------------------------------------------------------------------
; IRichEditOleCallback::GetNewStorage
; --------------------------------------------------------------------------------------------------------------------------------
IREOleCB_GetNewStorage(IREOleCB, IStoragePtr) {
OutputDebug, %A_ThisFunc%
; msdn.microsoft.com/en-us/library/windows/desktop/aa378977(v=vs.85).aspx
If !(HR := DllCall("Ole32.dll\CreateILockBytesOnHGlobal", "Ptr", 0, "Int", 1, "PtrP", ILockBytes)) {
; msdn.microsoft.com/en-us/library/windows/desktop/aa380324(v=vs.85).aspx
; STGM_READWRITE = 0x02, STGM_SHARE_EXCLUSIVE = 0x10, STGM_CREATE = 0x1000
If (HR := DllCall("Ole32.dll\StgCreateDocfileOnILockBytes", "Ptr", ILockBytes, "UInt", 0x1012, "UInt", 0, "PtrP", IStorage))
ObjRelease(ILockBytes)
Else
NumPut(IStorage, IStoragePtr + 0, "UPtr")
}
Return HR
}
; --------------------------------------------------------------------------------------------------------------------------------
; IRichEditOleCallback::GetInPlaceContext - not implemented
; --------------------------------------------------------------------------------------------------------------------------------
IREOleCB_GetInPlaceContext(IREOleCB, Frame, Doc, FrameInfo) {
OutputDebug, %A_ThisFunc%
Return 0x80004001 ; E_NOTIMPL
}
; --------------------------------------------------------------------------------------------------------------------------------
; IRichEditOleCallback::ShowContainerUI - not implemented
; --------------------------------------------------------------------------------------------------------------------------------
IREOleCB_ShowContainerUI(IREOleCB, Show) {
OutputDebug, %A_ThisFunc%
Return 0x80004001 ; E_NOTIMPL
}
; --------------------------------------------------------------------------------------------------------------------------------
; IRichEditOleCallback::QueryInsertObject - returns S_OK
; --------------------------------------------------------------------------------------------------------------------------------
IREOleCB_QueryInsertObject(IREOleCB, CLSID, STG, CP) {
OutputDebug, %A_ThisFunc%
Return 0 ; S_OK
}
; --------------------------------------------------------------------------------------------------------------------------------
; IRichEditOleCallback::DeleteObject - returns S_OK
; --------------------------------------------------------------------------------------------------------------------------------
IREOleCB_DeleteObject(IREOleCB, OleObj) {
OutputDebug, %A_ThisFunc%
Return 0 ; S_OK
}
; --------------------------------------------------------------------------------------------------------------------------------
; IRichEditOleCallback::QueryAcceptData - returns S_OK
; --------------------------------------------------------------------------------------------------------------------------------
IREOleCB_QueryAcceptData(IREOleCB, DataObj, Format, Operation, Really, MetaPic) {
OutputDebug, %A_ThisFunc%
Return 0 ; S_OK
}
; --------------------------------------------------------------------------------------------------------------------------------
; IRichEditOleCallback::ContextSensitiveHelp - not implemented
; --------------------------------------------------------------------------------------------------------------------------------
IREOleCB_ContextSensitiveHelp(IREOleCB, EnterMode) {
OutputDebug, %A_ThisFunc%
Return 0x80004001 ; E_NOTIMPL
}
; --------------------------------------------------------------------------------------------------------------------------------
; IRichEditOleCallback::GetClipboardData - not implemented
; --------------------------------------------------------------------------------------------------------------------------------
IREOleCB_GetClipboardData(IREOleCB, CharRange, Operation, DataObj) {
OutputDebug, %A_ThisFunc%
Return 0x80004001 ; E_NOTIMPL
}
; --------------------------------------------------------------------------------------------------------------------------------
; IRichEditOleCallback::GetDragDropEffect - returns S_OK
; --------------------------------------------------------------------------------------------------------------------------------
IREOleCB_GetDragDropEffect(IREOleCB, Drag, KeyState, Effect) {
OutputDebug, %A_ThisFunc%
Return 0 ; S_OK
}
; --------------------------------------------------------------------------------------------------------------------------------
; IRichEditOleCallback::GetContextMenu - not implemented
; --------------------------------------------------------------------------------------------------------------------------------
IREOleCB_GetContextMenu(IREOleCB, SelType, OleObj, CharRange, HMENU) {
;PUT YOUR CONTEXT MNU HERE
;Menu, RN_ContextMenu, Show
; OutputDebug, %A_ThisFunc%
Return 0x80004001 ; E_NOTIMPL
}