messagebox可以改大小吗?

Question

用哪个参数?没找着.太小看着不舒服,想改大一点.

Answer 1

不可以，除非你在MessageBox前新建一个线程来FindWindow
不过这样做还不如用 DoModal 来显示一个新的对话框

Answer 2

INT CBTMessageBox(HWND hwnd, LPSTR lpText, LPSTR lpCaption,
                  UINT uType)
{
  hhk = SetWindowsHookEx(WH_CBT, &CBTProc, 0,
                         GetCurrentThreadId());
  return MessageBox(hwnd, lpText, lpCaption, uType);
}LRESULT CALLBACK CBTProc(INT nCode, WPARAM wParam, LPARAM lParam)
{
  HWND  hParentWnd, hChildWnd;    // msgbox is "child"
  RECT  rParent, rChild, rDesktop;
  POINT pCenter, pStart;
  INT   nWidth, nHeight;  // notification that a window is about to be activated
  // window handle is wParam
  if (nCode == HCBT_ACTIVATE)
  {
    // set window handles
    hParentWnd = GetForegroundWindow();
    hChildWnd  = (HWND)wParam;    if((hParentWnd != 0) &&
       (hChildWnd != 0) &&
       (GetWindowRect(GetDesktopWindow(), &rDesktop) != 0) &&
       (GetWindowRect(hParentWnd, &rParent) != 0) &&
       (GetWindowRect(hChildWnd, &rChild) != 0))
    {
       // calculate message box dimensions
       nWidth  = (rChild.right - rChild.left);
       nHeight = (rChild.bottom - rChild.top);       // calculate parent window center point
       pCenter.x = rParent.left+((rParent.right
                 - rParent.left)/2);
       pCenter.y = rParent.top+((rParent.bottom
                 - rParent.top)/2);       // calculate message box starting point
       pStart.x = (pCenter.x - (nWidth/2));
       pStart.y = (pCenter.y - (nHeight/2));       // adjust if message box is off desktop
       if(pStart.x < 0) pStart.x = 0;
       if(pStart.y < 0) pStart.y = 0;
       if(pStart.x + nWidth > rDesktop.right)
          pStart.x = rDesktop.right - nWidth;
       if(pStart.y + nHeight > rDesktop.bottom)
          pStart.y = rDesktop.bottom - nHeight;       // move message box
       MoveWindow(hChildWnd,
                  pStart.x, pStart.y,
                  nWidth, nHeight,
                  FALSE);
    }
    // exit CBT hook
    UnhookWindowsHookEx(hhk);
  }
  // otherwise, continue with any possible chained hooks
  else CallNextHookEx(hhk, nCode, wParam, lParam);
  return 0;
}