ScrollBar doesnt show in RichEdit Control.

[xandaz]

    Hy guys. I created both horizontal and vertical scrollbars for a RichEdit controls but they don't show. Anyone knows why?

[TouEnMasm]

There must be enought text in the richedit for that.
But without the code ,it isn't possible to affirm it is that.

[xandaz]

     There's enough text. the bars just dont show.

Code Select Expand

        invoke  CreateWindowEx,0,addr WC_SCROLLBAR,0,WS_VISIBLE+WS_CHILD+SBS_VERT+SBS_RIGHTALIGN,\
                    CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,\
                    [edi.MdiStruct.hEdit],0,hInstance,0
        mov     [edi.MdiStruct.hVScroll],eax
        invoke  SendMessage,eax,SBM_SETRANGE,0,1000                   
        invoke  CreateWindowEx,0,addr WC_SCROLLBAR,0,WS_VISIBLE+WS_CHILD+SBS_HORZ+SBS_BOTTOMALIGN,\
                    CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,\
                    [edi.MdiStruct.hEdit],0,hInstance,0
        mov     [edi.MdiStruct.hHScroll],eax
        invoke  SendMessage,eax,SBM_SETRANGE,0,1000
        invoke  EnableScrollBar,[edi.MdiStruct.hEdit],SB_BOTH,ESB_ENABLE_BOTH


[xandaz]

   oh i see now. they need size. i thought there was a way to automate the scrollbars. problem solved

[xandaz]

     This complicates the hell outta my job. if i use SBS_HORZ and SBS_VERT don't the scroll bars just appear sized and aligned as witth SBS_BOTTOMALGIN and SBS_LEFTALIGN?

[TouEnMasm]

Try this

   INVOKE     CreateWindowEx, NULL, addr crichedit, NULL,\
      WS_CHILD or WS_BORDER or ES_MULTILINE or \
      ES_NOHIDESEL or ES_SAVESEL or ES_SELECTIONBAR or\
      WS_HSCROLL or ES_AUTOHSCROLL or\
      WS_VSCROLL or ES_AUTOVSCROLL or WS_CLIPSIBLINGS or WS_CLIPCHILDREN,\
      0, 0,largeur, hauteur, Htab,NULL, Hinst, NULL

[Greenhorn]

Hi xandaz,

why don't you just use ES_AUTOHSCROLL | ES_AUTOVSCROLL in the style flags of the RichEdit ?

Setting up your own scroll bars needs management about line height/width and window height/width.
https://docs.microsoft.com/en-us/windows/win32/controls/scroll-text-in-scroll-bars

But I'm not sure if you receive the WM_HSCROLL/WM_VSCROLL messages if the mouse is ovr the rich edit control.

Kind regards
Greenhorn

[Greenhorn]

Try this

   INVOKE     CreateWindowEx, NULL, addr crichedit, NULL,\
      WS_CHILD or WS_BORDER or ES_MULTILINE or \
      ES_NOHIDESEL or ES_SAVESEL or ES_SELECTIONBAR or\
      WS_HSCROLL or ES_AUTOHSCROLL or\
      WS_VSCROLL or ES_AUTOVSCROLL or WS_CLIPSIBLINGS or WS_CLIPCHILDREN,\
      0, 0,largeur, hauteur, Htab,NULL, Hinst, NULL

Thanks ToutEnMasm 

[xandaz]

    Thanks a lot. I knew there was a way. thanks tout