Another ASM editor

[NoCforMe]

I'm a bit confused. According to Microsoft, EM_GETZOOM returns the zoom numerator and denominator in wParam & lParam:

Parameters
wParam
Receives the numerator of the zoom ratio.

lParam
Receives the denominator of the zoom ratio.

which must mean that you pass pointers to those variables, right?

Code Select Expand

LOCAL zoomNum:DWORD, zoomDenom:DWORD

INVOKE SendMessage, EditHandle, EM_GETZOOM, ADDR zoomNum, ADDR zoonDenom


[Biterider]

Hi NoCforMe

From DebugCenter code

Code Select Expand

  local dNumerator:DWORD, dDenominator:DWORD

  SetObject xsi
  ;Remember the current RichEdit zoom factor
  invoke SendMessage, [xsi].hEdit, EM_GETZOOM, addr dNumerator, addr dDenominator
  .if eax != FALSE
    mov [xsi].dZoomFactor, $32($invoke(MulDiv, dNumerator, ZOOM_BASE, dDenominator))
  .endif
This works nicely.

Biterider

[jj2007]

which must mean that you pass pointers to those variables, right?

Right, that's what I do indeed.

[NoCforMe]

Which wasn't at all clear from

mov edx, esp
        push eax
        invoke SendMessage, hRichEd, EM_GETZOOM, edx, esp

What was edx set to previously? and how did esp get to be set to point to that other variable (except for 1 DWORD)? Anyhow, moving on ...

[jj2007]

Try it out, it works. Olly is your friend

Code Select Expand

push eax ; wParam
mov edx, esp
push eax ; lParam
invoke SendMessage, hRichEd, EM_GETZOOM, edx, esp
pop edx ; wParam, either 0 (no zoom) or 100
pop ecx ; lParam, 10...200

[NoCforMe]

No thanks, I'd rather be explicit rather than too clever by half:

Code Select Expand

INVOKE SendMessage, EditHandle, EM_GETZOOM, ADDR zoomNum, ADDR zoonDenom