请教如何去除DateTimePicker的3D边框，路过帮顶，来者有分

最近希望把DateTimePicker变成Flat样式，决定先去除他3D的边框，在CDateTimeCtrl派生类中重载OnNcPaint,然后GetClientRect,发现得到了去处3D边框之后的面积，也就是说DateTimePicker的Client不包括3D边框，也就无法通过CDC在OnNcPaint中绘制边框，于是希望通过重载PreSubclassWindow添加ModifyStyle来去除边框，但是尝试了一个上午也没有做到，请有经验的高人帮帮忙，点播一二，在这里谢过了，路过的神仙请帮顶，来者有分

19 个解决方案

#1

本程序实现下面的平面组合框,供参考,道理一样

#if !defined(FLATCOMBOBOX_H_INCLUDED)
#define FLATCOMBOBOX_H_INCLUDED

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#define FC_DRAWNORMAL 0x00000001
#define FC_DRAWRAISED 0x00000002
#define FC_DRAWPRESSD 0x00000004

/////////////////////////////////////////////////////////////////////////////
// CFlatComboBox window

class CFlatComboBox : public CComboBox
{
// Construction
public:
CFlatComboBox();

// Attributes
public:
bool m_bLBtnDown;
COLORREF m_clrHilite;
COLORREF m_clrShadow;
COLORREF m_clrDkShad;
COLORREF m_clrButton;

// Operations
public:
void DrawCombo(DWORD dwStyle, COLORREF clrTopLeft, COLORREF clrBottomRight);
int Offset();

// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CFlatComboBox)
//}}AFX_VIRTUAL

// Implementation
public:
virtual ~CFlatComboBox();

// Generated message map functions
protected:
//{{AFX_MSG(CFlatComboBox)
afx_msg void OnMouseMove(UINT nFlags, CPoint point);
afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
afx_msg void OnTimer(UINT nIDEvent);
afx_msg void OnPaint();
//}}AFX_MSG

DECLARE_MESSAGE_MAP()
};

/////////////////////////////////////////////////////////////////////////////

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(FLATCOMBOBOX_H_INCLUDED)

#2

#include "stdafx.h"
#include "FlatComboBox.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CFlatComboBox

CFlatComboBox::CFlatComboBox()
{
m_bLBtnDown = false;
}

CFlatComboBox::~CFlatComboBox()
{
}

BEGIN_MESSAGE_MAP(CFlatComboBox, CComboBox)
//{{AFX_MSG_MAP(CFlatComboBox)
ON_WM_MOUSEMOVE()
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONUP()
ON_WM_TIMER()
ON_WM_PAINT()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CFlatComboBox message handlers

void CFlatComboBox::OnMouseMove(UINT nFlags, CPoint point)
{
SetTimer(1,10,NULL);
CComboBox::OnMouseMove(nFlags, point);
}

void CFlatComboBox::OnLButtonDown(UINT nFlags, CPoint point)
{
m_bLBtnDown = true;
CComboBox::OnLButtonDown(nFlags, point);
}

void CFlatComboBox::OnLButtonUp(UINT nFlags, CPoint point)
{
m_bLBtnDown = false;
Invalidate();
CComboBox::OnLButtonUp(nFlags, point);
}

void CFlatComboBox::OnTimer(UINT nIDEvent)
{
POINT pt;
GetCursorPos(&pt);
CRect rcItem;
GetWindowRect(&rcItem);

static bool bPainted = false;

// OnLButtonDown, show pressed.
if (m_bLBtnDown==true) {
KillTimer (1);
if (bPainted == true) {
DrawCombo(FC_DRAWPRESSD, ::GetSysColor(COLOR_BTNSHADOW),
::GetSysColor(COLOR_BTNHIGHLIGHT));
bPainted = false;
}
return;
}

// If mouse leaves, show flat.
if (!rcItem.PtInRect(pt)) {
KillTimer (1);
if (bPainted == true) {
DrawCombo(FC_DRAWNORMAL, ::GetSysColor(COLOR_BTNFACE),
::GetSysColor(COLOR_BTNFACE));
bPainted = false;
}
return;
}

// On mouse over, show raised.
else {
if (bPainted == true)
return;
else {
bPainted = true;
DrawCombo(FC_DRAWRAISED, ::GetSysColor(COLOR_BTNSHADOW),
::GetSysColor(COLOR_BTNHIGHLIGHT));
}
}

CComboBox::OnTimer(nIDEvent);
}

void CFlatComboBox::OnPaint()
{
Default();
DrawCombo(FC_DRAWNORMAL, ::GetSysColor(COLOR_BTNFACE),
::GetSysColor(COLOR_BTNFACE));
}

void CFlatComboBox::DrawCombo(DWORD dwStyle, COLORREF clrTopLeft, COLORREF clrBottomRight)
{
CRect rcItem;
GetClientRect(&rcItem);
CDC* pDC = GetDC();

// Cover up dark 3D shadow.
pDC->Draw3dRect(rcItem, clrTopLeft, clrBottomRight);
rcItem.DeflateRect(1,1);

if (!IsWindowEnabled()) {
pDC->Draw3dRect(rcItem, ::GetSysColor(COLOR_BTNHIGHLIGHT),
::GetSysColor(COLOR_BTNHIGHLIGHT));
}

else {
pDC->Draw3dRect(rcItem, ::GetSysColor(COLOR_BTNFACE),
::GetSysColor(COLOR_BTNFACE));
}

// Cover up dark 3D shadow on drop arrow.
rcItem.DeflateRect(1,1);
rcItem.left = rcItem.right-Offset();
pDC->Draw3dRect(rcItem, ::GetSysColor(COLOR_BTNFACE),
::GetSysColor(COLOR_BTNFACE));

// Cover up normal 3D shadow on drop arrow.
rcItem.DeflateRect(1,1);
pDC->Draw3dRect(rcItem, ::GetSysColor(COLOR_BTNFACE),
::GetSysColor(COLOR_BTNFACE));

if (!IsWindowEnabled()) {
return;
}

switch (dwStyle)
{
case FC_DRAWNORMAL:
rcItem.top -= 1;
rcItem.bottom += 1;
pDC->Draw3dRect(rcItem, ::GetSysColor(COLOR_BTNHIGHLIGHT),
::GetSysColor(COLOR_BTNHIGHLIGHT));
rcItem.left -= 1;
pDC->Draw3dRect(rcItem, ::GetSysColor(COLOR_BTNHIGHLIGHT),
::GetSysColor(COLOR_BTNHIGHLIGHT));
break;

case FC_DRAWRAISED:
rcItem.top -= 1;
rcItem.bottom += 1;
pDC->Draw3dRect(rcItem, ::GetSysColor(COLOR_BTNHIGHLIGHT),
::GetSysColor(COLOR_BTNSHADOW));
break;

case FC_DRAWPRESSD:
rcItem.top -= 1;
rcItem.bottom += 1;
rcItem.OffsetRect(1,1);
pDC->Draw3dRect(rcItem, ::GetSysColor(COLOR_BTNSHADOW),
::GetSysColor(COLOR_BTNHIGHLIGHT));
break;
}

ReleaseDC(pDC);
}

int CFlatComboBox::Offset()
{
// Thanks to Todd Brannam for this suggestion...
return ::GetSystemMetrics(SM_CXHTHUMB);
}

#3

http://www.codeproject.com/cs/miscctrl/FlatDateTimePicker.asp

#4

十分感谢楼上两位的帮忙

关于ComboBox的Flat样式我早已实现，但是DateTimePicker跟ComboBox的实现原理相距甚远，在DateTimePicker的基类CDateTimeCtrl的派生类中重载OnPaint是没有用的，这样只能在3D边框以内画东西，要去掉3D边框只能重载OnNcPaint,可是去掉3D边框容易，加上自己的边框可就难了，我尝试了多种方法也不能在原边框的位置上画出任何东西，这个原3D边框的区域十分神秘，我研究了两天也没出结果(汗一个)，网上也没找到有价值信息，求之不得，辗转反侧，请各位高人帮忙，谢谢

#5

#6

striking(硬撑者) ( ) 信誉：109  2006-05-25 15:58:00  得分: 0

   o


兄台可有良策？

#7

lixiaosan(小三) ( ) 信誉：150  2006-05-25 14:26:00  得分: 0

   http://www.codeproject.com/cs/miscctrl/FlatDateTimePicker.asp


看到这个C#的了，尝试把它转到C++,不过我不懂C#，弄了半天也没弄明白，可有高人指点？

#8

他也是重新处理了WM_NC_PAINT, WM_PAINT and WM_NCHITTEST 等。。。你也做类似处理即可。。

#9

画上去

#10

pripor(GDI+真是好) ( ) 信誉：100  2006-05-25 22:48:00  得分: 0

   画上去


==================================================================

画不上啊

#11

他也是重新处理了WM_NC_PAINT, WM_PAINT and WM_NCHITTEST 等。。。你也做类似处理即可。。

======================================================

我竟然没看懂它对那一系列消息的处理，没发现什么玄机

#12

mark

#13

世界性难题？

#14

大仙们显显灵吧

#15

天灵灵，地灵灵 ... ...

#16

顶

#17

诸位辛苦，虽然没有收到一个具有建设性的，解决问题的回复，还是感谢大家的捧场

#18

学习，ＵＰ！

#19

帮顶

#20

#1

#2

#3