EM_SCROLLCARET

[sexy96]

How can I read the number of the first visible line in the AkelPad window using a .js script?

How do I determine the cursor's position within the text in terms of X and Y pixels?

[DV]

Code: Select all

function Edit_GetFirstVisibleLine(hEd)
{
  var nLine = AkelPad.SendMessage(hEd, EM_GETFIRSTVISIBLELINE, 0, 0);
  return AkelPad.SendMessage(hEd, AEM_GETUNWRAPLINE, nLine, 0);
}

Code: Select all

var lpPoint = AkelPad.MemAlloc(8 /*sizeof(POINT)*/);
var oSys = AkelPad.SystemFunction();
oSys.Call("User32::GetCaretPos", lpPoint);
oSys.Call("User32::ClientToScreen", hWnd, lpPoint);
var nPosX = AkelPad.MemRead(_PtrAdd(lpPoint, 0), 3 /*DT_DWORD*/);
var nPosY = AkelPad.MemRead(_PtrAdd(lpPoint, 4), 3 /*DT_DWORD*/);
AkelPad.MemFree(lpPoint);

[sexy96]

How to calculate the (variable) width of the line-number margin in pixels
based on text length: 9 lines, 99, 100, 1000, etc.

[DV]

How to calculate the (variable) width of the line-number margin in pixels

That's not easy to do. You need to work directly with WinAPI.
You may use the approach similar to the function `getRequiredWidthAndHeight` here:
https://github.com/d0vgan/AkelPad-Scrip ... te.js#L606
That function uses the following two parameters:

Code: Select all

var hWndEdit = AkelPad.GetEditWnd();
var hFontEdit = AkelPad.SendMessage(hWndEdit, WM_GETFONT, 0, 0);

[DV]

Depending on your actual needs, there may be a much easier solution mentioned in "AkelPad\AkelFiles\Docs\LineBoard-Eng.txt" :

Code: Select all

    WScript.Echo(GetBoardWidth(AkelPad.GetEditWnd(), 0));

    function GetBoardWidth(hWndEdit, hDocEdit)
    {
      var lpRect;
      var nWidth=0;

      if (lpRect=AkelPad.MemAlloc(16 /*sizeof(RECT)*/))
      {
        AkelPad.CallW("LineBoard::Main", 11, hWndEdit, hDocEdit, lpRect);
        nWidth=AkelPad.MemRead(lpRect + 0 /*offsetof(RECT, left)*/, 3 /*DT_DWORD*/);
        AkelPad.MemFree(lpRect);
      }
      return nWidth;
    }

[sexy96]

Thank you