除了将样式设置为WS_THICKFRAME 之外，您可能还需要一个系统来在调整对话框大小时移动对话框中的控件并调整其大小。对于我自己的个人用途，我创建了一个基类来替换具有此功能的 CDialog。派生自此类并在您的InitDialog 函数中为每个子控件调用AutoMove 函数，以定义它应该移动多少以及它应该相对于父对话框调整多少。资源文件中对话框的大小用作最小大小。
BaseDialog.h：
#if !defined(AFX_BASEDIALOG_H__DF4DE489_4474_4759_A14E_EB3FF0CDFBDA__INCLUDED_)
#define AFX_BASEDIALOG_H__DF4DE489_4474_4759_A14E_EB3FF0CDFBDA__INCLUDED_
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#include <vector>
class CBaseDialog : public CDialog
{
// Construction
public:
CBaseDialog(UINT nIDTemplate, CWnd* pParent = NULL); // standard constructor
void AutoMove(int iID, double dXMovePct, double dYMovePct, double dXSizePct, double dYSizePct);
// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CBaseDialog)
protected:
//}}AFX_VIRTUAL
protected:
//{{AFX_MSG(CBaseDialog)
virtual BOOL OnInitDialog();
afx_msg void OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI);
afx_msg void OnSize(UINT nType, int cx, int cy);
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
public:
bool m_bShowGripper; // ignored if not WS_THICKFRAME
private:
struct SMovingChild
{
HWND m_hWnd;
double m_dXMoveFrac;
double m_dYMoveFrac;
double m_dXSizeFrac;
double m_dYSizeFrac;
CRect m_rcInitial;
};
typedef std::vector<SMovingChild> MovingChildren;
MovingChildren m_MovingChildren;
CSize m_szInitial;
CSize m_szMinimum;
HWND m_hGripper;
};
//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.
#endif // !defined(AFX_BASEDIALOG_H__DF4DE489_4474_4759_A14E_EB3FF0CDFBDA__INCLUDED_)
BaseDialog.cpp：
#include "stdafx.h"
#include "BaseDialog.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
CBaseDialog::CBaseDialog(UINT nIDTemplate, CWnd* pParent /*=NULL*/)
: CDialog(nIDTemplate, pParent),
m_bShowGripper(true),
m_szMinimum(0, 0),
m_hGripper(NULL)
{
}
BEGIN_MESSAGE_MAP(CBaseDialog, CDialog)
//{{AFX_MSG_MAP(CBaseDialog)
ON_WM_GETMINMAXINFO()
ON_WM_SIZE()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
void CBaseDialog::AutoMove(int iID, double dXMovePct, double dYMovePct, double dXSizePct, double dYSizePct)
{
ASSERT((dXMovePct + dXSizePct) <= 100.0); // can't use more than 100% of the resize for the child
ASSERT((dYMovePct + dYSizePct) <= 100.0); // can't use more than 100% of the resize for the child
SMovingChild s;
GetDlgItem(iID, &s.m_hWnd);
ASSERT(s.m_hWnd != NULL);
s.m_dXMoveFrac = dXMovePct / 100.0;
s.m_dYMoveFrac = dYMovePct / 100.0;
s.m_dXSizeFrac = dXSizePct / 100.0;
s.m_dYSizeFrac = dYSizePct / 100.0;
::GetWindowRect(s.m_hWnd, &s.m_rcInitial);
ScreenToClient(s.m_rcInitial);
m_MovingChildren.push_back(s);
}
BOOL CBaseDialog::OnInitDialog()
{
CDialog::OnInitDialog();
// use the initial dialog size as the default minimum
if ((m_szMinimum.cx == 0) && (m_szMinimum.cy == 0))
{
CRect rcWindow;
GetWindowRect(rcWindow);
m_szMinimum = rcWindow.Size();
}
// keep the initial size of the client area as a baseline for moving/sizing controls
CRect rcClient;
GetClientRect(rcClient);
m_szInitial = rcClient.Size();
// create a gripper in the bottom-right corner
if (m_bShowGripper && ((GetStyle() & WS_THICKFRAME) != 0))
{
SMovingChild s;
s.m_rcInitial.SetRect(-GetSystemMetrics(SM_CXVSCROLL), -GetSystemMetrics(SM_CYHSCROLL), 0, 0);
s.m_rcInitial.OffsetRect(rcClient.BottomRight());
m_hGripper = CreateWindow(_T("Scrollbar"), _T("size"), WS_CHILD | WS_VISIBLE | SBS_SIZEGRIP,
s.m_rcInitial.left, s.m_rcInitial.top, s.m_rcInitial.Width(), s.m_rcInitial.Height(),
m_hWnd, NULL, AfxGetInstanceHandle(), NULL);
ASSERT(m_hGripper != NULL);
if (m_hGripper != NULL)
{
s.m_hWnd = m_hGripper;
s.m_dXMoveFrac = 1.0;
s.m_dYMoveFrac = 1.0;
s.m_dXSizeFrac = 0.0;
s.m_dYSizeFrac = 0.0;
m_MovingChildren.push_back(s);
// put the gripper first in the z-order so it paints first and doesn't obscure other controls
::SetWindowPos(m_hGripper, HWND_TOP, 0, 0, 0, 0, SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOOWNERZORDER | SWP_NOSIZE | SWP_SHOWWINDOW);
}
}
return TRUE; // return TRUE unless you set the focus to a control
}
void CBaseDialog::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI)
{
CDialog::OnGetMinMaxInfo(lpMMI);
if (lpMMI->ptMinTrackSize.x < m_szMinimum.cx)
lpMMI->ptMinTrackSize.x = m_szMinimum.cx;
if (lpMMI->ptMinTrackSize.y < m_szMinimum.cy)
lpMMI->ptMinTrackSize.y = m_szMinimum.cy;
}
void CBaseDialog::OnSize(UINT nType, int cx, int cy)
{
CDialog::OnSize(nType, cx, cy);
int iXDelta = cx - m_szInitial.cx;
int iYDelta = cy - m_szInitial.cy;
HDWP hDefer = NULL;
for (MovingChildren::iterator p = m_MovingChildren.begin(); p != m_MovingChildren.end(); ++p)
{
if (p->m_hWnd != NULL)
{
CRect rcNew(p->m_rcInitial);
rcNew.OffsetRect(int(iXDelta * p->m_dXMoveFrac), int(iYDelta * p->m_dYMoveFrac));
rcNew.right += int(iXDelta * p->m_dXSizeFrac);
rcNew.bottom += int(iYDelta * p->m_dYSizeFrac);
if (hDefer == NULL)
hDefer = BeginDeferWindowPos(m_MovingChildren.size());
UINT uFlags = SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOZORDER;
if ((p->m_dXSizeFrac != 0.0) || (p->m_dYSizeFrac != 0.0))
uFlags |= SWP_NOCOPYBITS;
DeferWindowPos(hDefer, p->m_hWnd, NULL, rcNew.left, rcNew.top, rcNew.Width(), rcNew.Height(), uFlags);
}
}
if (hDefer != NULL)
EndDeferWindowPos(hDefer);
if (m_hGripper != NULL)
::ShowWindow(m_hGripper, (nType == SIZE_MAXIMIZED) ? SW_HIDE : SW_SHOW);
}