自绘菜单的问题，怎么WM_MEASUREITEM中设置的菜单大小不起作用？？？

[hawkxjy]

想把菜单的背景色和字体颜色做个修改，要设置MF_OWNERDRAW属性，并响应WM_MEASUREITEM消息来设置各个item的大小，同时还有WM_DRAWITEM来画。
可奇怪的是我在WM_MEASUREITEM中设置的大小根本不起作用！！！另外弹出的菜单总是边框的一小部分无法刷上我所设置的颜色？

部分代码：
switch(cwps.message)
{
case WM_INITMENUPOPUP:
{
HMENU hMenu = (HMENU)cwps.wParam;
int nCount = GetMenuItemCount(hMenu);
for( int i = 0; i < nCount; ++i )
{
UINT nId = GetMenuItemID(hMenu, i);
ModifyMenu(hMenu, i, MF_BYPOSITION|MF_OWNERDRAW, nId, (LPCSTR)cwps.lParam); // 改变菜单的自绘属性
}
}
break;
case WM_MEASUREITEM:
{
LPMEASUREITEMSTRUCT lpmis = (LPMEASUREITEMSTRUCT)cwps.lParam;
if( lpmis->CtlType == ODT_MENU )
{
lpmis->itemHeight = 30; // 设置大小，却不起作用？？？！！！
lpmis->itemWidth = 150;

return 0;
}
}
break;
case WM_DRAWITEM:
{
COLORREF clrSel, clrUnSel;
COLORREF clrBkSel, clrBkUnSel;
LPDRAWITEMSTRUCT lpdis = (LPDRAWITEMSTRUCT)cwps.lParam;
if( lpdis->itemState & ODS_SELECTED )
{
clrSel = SetTextColor(lpdis->hDC, RGB(255, 0, 0));
FillRect(lpdis->hDC, &lpdis->rcItem, (HBRUSH)GetStockObject(WHITE_BRUSH));
}
else
{
clrUnSel = SetTextColor(lpdis->hDC, RGB(0, 255, 0));
FillRect(lpdis->hDC, &lpdis->rcItem, (HBRUSH)GetStockObject(BLACK_BRUSH));
}
TextOut(lpdis->hDC, lpdis->rcItem.left+13, lpdis->rcItem.top, "Good", 4);
} // 得到的UI显示有些异常，菜单项的边框部分总是有一点点灰色，不是自定义的颜色！！？？
return 0;


求高手指点~~~~

[ringphone]

WM_MEASUREITEM里面设置了大小需要返回TRUE而不是0。
菜单项的边框部分总是有一点点灰色，不是自定义的颜色，这是正常的，因为菜单也是一个窗口，是有边框的，不得到其窗口句柄，你没办法为窗口边框上色。
菜单的窗口比较特殊，没办法用FindWindow等函数得到其窗口句柄，因此要想得到窗口句柄给其边框上色，必须用HOOK勾WH_CALLWNDPROC，替换其窗口过程才行。

[hawkxjy]

ringphone(临风)老兄，谢谢你的提示。不过当我把返回值改为TRUE后（包括 WM_DRAWITEM的返回值），结果还是一样啊！大小仍然不起作用！！！？
另外，和老兄想的一样，俺晓得需要HOOK一下才能改变菜单边框的颜色，我可以通过HOOK拿到菜单的HWND，可这咋去改窗口边框呢？


能不能给个例子啊？？

[ringphone]

The WM_INITMENUPOPUP message is sent when a drop-down menu or submenu is about to become active. This allows an application to modify the menu before it is displayed, without changing the entire menu

估计不能在WM_INITMENUPOPUP消息里面设置自绘，你改在WM_CREATE里面试试。

HOOK是要替换菜单的窗口过程，在其WM_NCPAINT里面给边框上色。具体例子可以找一下XP样式菜单，网上有很多这样的代码。

[Kudeet]

自画菜单的WM_MEASUREITEM只会发送一次

[hawkxjy]

楼上两为说的都对，不过在WM_INITMENUPOPUP消息里面是可以设置自绘属性的，并且可以截获WM_MEASUREITEM消息，只是设置的大小在WM_DRAWITEM里就是看不到啊！

我试着在WM_CREATE里做了属性的设置，其结果还是一样~~~~郁闷啊---------

[Jimmy_Xia]

自绘菜单
闻怡洋译
--------------------------------------------------------------------------------
在这里提供一个C++类(CCustomMenu)，该类是CMenu的子类，并且拥有自绘能力。它可以向你提供以下的功能：
设置字体颜色。
设置高亮度颜色。
设置高亮度时的风格。
设置选中时和在普通状态下的菜单显示的图标。
设置显示图标大小。
在CCustomMenu中定义了结构MENUDATA，你必须根据你的需要填充该结构，并且在增加菜单时提供该结构的指针(调用AppendMenu,InsertMenu)。下面是一个例子：
1、定义CCustomMenu的实例，和MENUDATA结构变量。
CCustomMenu m_cCustomMenu;
MENUDATA menuData [8]; // as many menu items are present , You should be able to use
//new and do the same
2、调用CreateMenu()设置有关参数。
m_customMenu.CreateMenu ();
m_customMenu.SetIconSize (25,25); //This is to set the size of the Icon.
// This should be used only once for any menu
// in order to resize it, destroy and create the menu again with different size.
m_customMenu.SetHighlightStyle (Normal); //Or TextOnly, if you want the
// background color to remain the same
// and the Text color to change to the Highlight color.
// The following setXXXColor sets the menu colors. If you dont want to change any, Dont call these member functions.
m_customMenu.SetTextColor (RGB (255,0,0));
m_customMenu.SetBackColor (RGB (255,255,255));
m_customMenu.SetHighlightColor (RGB (0,0,255));
3、设置MENUDATA变量，并增加菜单项。
lstrcpy (menuData[0].menuText , "text1");
menuData[0].menuIconNormal= IDI_ICON1;
m_customMenu.AppendMenu (MF_OWNERDRAW,3,(LPCTSTR)menuData);
3、在你的窗口中重载OnMeasureItem(...)函数。
void CMyView::OnMeasureItem(int nIDCtl, LPMEASUREITEMSTRUCT lpMeasureItemStruct)
{
if ( lpMeasureItemStruct->CtlType == ODT_MENU &&
IsMenu((HMENU)lpMeasureItemStruct->itemID) &&
(lpMeasureItemStruct->itemID == (UINT)m_hMenuSub) )
{
m_customMenu.MeasureItem (lpMeasureItemStruct);
}
else
// let MFC's self-drawing handle it
CView::OnMeasureItem(nIDCtl, lpMeasureItemStruct);
}

下面的函数将帮助你设置菜单属性。
void SetTextColor (COLORREF );
void SetBackColor (COLORREF);
void SetHighlightColor (COLORREF);
void SetIconSize (int, int);
void SetHighlightStyle (HIGHLIGHTSTYLE ); // HIGHLIGHTSTYLE : enum {Normal, TextOnly}
void SetHighlightTextColor (COLORREF);

下面是文件代码：
//*************************************************************************
// CustomMenu.h : header file
//
#if
!defined(AFX_CUSTOMMENU_H__FE5B01C3_1E02_11D1_B87A_0060979CDF6D__INCLUDED_)
#define AFX_CUSTOMMENU_H__FE5B01C3_1E02_11D1_B87A_0060979CDF6D__INCLUDED_

#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000
class MENUDATA
{
public:
MENUDATA () { menuIconNormal = -1; menuIconSelected = -1;};
char menuText[32];
UINT menuIconNormal;
UINT menuIconSelected;
};

typedef enum {Normal,TextOnly} HIGHLIGHTSTYLE;
///////////////////////////////////////////////////////////////////////////
//
// CCustomMenu window
class CCustomMenu : public CMenu
{
// Construction
public:
CCustomMenu();
// Attributes
public:
// Operations
public:
// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CCustomMenu)
//}}AFX_VIRTUAL
// Implementation
public:
virtual ~CCustomMenu();
virtual void DrawItem( LPDRAWITEMSTRUCT);
virtual void MeasureItem( LPMEASUREITEMSTRUCT );
void SetTextColor (COLORREF );
void SetBackColor (COLORREF);
void SetHighlightColor (COLORREF);
void SetIconSize (int, int);
void SetHighlightStyle (HIGHLIGHTSTYLE );
void SetHighlightTextColor (COLORREF);
// Generated message map functions
protected:
COLORREF m_crText;
COLORREF m_clrBack;
COLORREF m_clrText;
COLORREF m_clrHilight;
COLORREF m_clrHilightText;
LOGFONT m_lf;
CFont m_fontMenu;
UINT m_iMenuHeight;
BOOL m_bLBtnDown;
CBrush m_brBackground,m_brSelect;
CPen m_penBack;
int m_iconX,m_iconY;
HIGHLIGHTSTYLE m_hilightStyle;
//{{AFX_MSG(CCustomMenu)
// NOTE - the ClassWizard will add and remove member functions here.
//}}AFX_MSG
};
///////////////////////////////////////////////////////////////////////////
//
//{{AFX_INSERT_LOCATION}}
// Microsoft Developer Studio will insert additional declarations immediately before the previous line.
#endif //!defined(AFX_CUSTOMMENU_H__FE5B01C3_1E02_11D1_B87A_0060979CDF6D__INCLUDED_)

[Jimmy_Xia]

//*************************************************************************
// CustomMenu.cpp : implementation file
//
#include "stdafx.h"
#include "CustomMenu.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

///////////////////////////////////////////////////////////////////////////
//
// CCustomMenu
CCustomMenu::CCustomMenu()
{
m_clrText = GetSysColor (COLOR_MENUTEXT);
m_clrBack = GetSysColor (COLOR_MENU);
m_brBackground.CreateSolidBrush (m_clrBack);
m_penBack.CreatePen (PS_SOLID,0,m_clrBack);
m_crText = m_clrText;
m_bLBtnDown = FALSE;
m_iconX = GetSystemMetrics ( SM_CXMENUCHECK);
m_iconY = GetSystemMetrics (SM_CYMENUCHECK );
m_clrHilight = GetSysColor (COLOR_HIGHLIGHT);
m_brSelect.CreateSolidBrush (m_clrHilight);
m_clrHilightText = GetSysColor (COLOR_HIGHLIGHTTEXT);
ZeroMemory ((PVOID) &m_lf,sizeof (LOGFONT));
NONCLIENTMETRICS nm;
nm.cbSize = sizeof (NONCLIENTMETRICS);
//Get the system metrics for the Captionfromhere
VERIFY (SystemParametersInfo (SPI_GETNONCLIENTMETRICS,0,&nm,0));
m_lf = nm.lfMenuFont;
m_iMenuHeight = nm.iMenuHeight;
m_fontMenu.CreateFontIndirect (&m_lf);
}

CCustomMenu::~CCustomMenu()
{
if ((HBRUSH) m_brBackground != NULL)
m_brBackground.DeleteObject ();
if ((HFONT)m_fontMenu !=NULL)
m_fontMenu.DeleteObject ();
if ((HBRUSH)m_brSelect != NULL)
m_brSelect.DeleteObject ();
}
///////////////////////////////////////////////////////////////////////////
//
// CCustomMenu message handlers
void CCustomMenu::DrawItem (LPDRAWITEMSTRUCT lpDIS)
{
ASSERT(lpDIS != NULL);
CDC* pDC = CDC::FromHandle(lpDIS->hDC);
CRect rect;
HICON hIcon;
COLORREF crText = m_crText;
// draw the colored rectangle portion
rect.CopyRect(&lpDIS->rcItem);
// draw the up/down/focused/disabled state
UINT action = lpDIS->itemAction;
UINT state = lpDIS->itemState;
CString strText;
LOGFONT lf;
lf = m_lf;
CFont dispFont;
CFont *pFont;
//GetWindowText(strText);
if (lpDIS->itemData != NULL)
{
strText = (((MENUDATA*) (lpDIS->itemData))->menuText);
if ((((MENUDATA *)(lpDIS->itemData))->menuIconNormal) == -1)
hIcon = NULL;
else if (state & ODS_SELECTED)
{
if ((((MENUDATA *)(lpDIS->itemData))->menuIconSelected) != -1)
hIcon = AfxGetApp ()->LoadIcon (((MENUDATA *)(lpDIS->itemData))->menuIconSelected);
else
hIcon = AfxGetApp()->LoadIcon (((MENUDATA*)(lpDIS->itemData))->menuIconNormal);
}
else
hIcon = AfxGetApp()->LoadIcon (((MENUDATA*)(lpDIS->itemData))->menuIconNormal);
TRACE1 ("Draw for %s\n", strText);
}
else
{
strText.Empty();
hIcon = NULL;
}
if ( (state & ODS_SELECTED) )
{
// draw the down edges
CPen *pOldPen = pDC->SelectObject (&m_penBack);
//You need only Text highlight and thats what you get
if (m_hilightStyle != Normal)
{
pDC->FillRect (rect,&m_brBackground);
}
else
{
pDC->FillRect (rect,&m_brSelect);
}
pDC->SelectObject (pOldPen);
pDC->Draw3dRect (rect,GetSysColor (COLOR_3DHILIGHT),GetSysColor(COLOR_3DSHADOW));
lf.lfWeight = FW_BOLD;
if ((HFONT)dispFont != NULL)
dispFont.DeleteObject ();
dispFont.CreateFontIndirect (&lf);
crText = m_clrHilightText;
//While selected move the text a bit
TRACE0 ("SELECT,SELECTED\n");
}
else
{
CPen *pOldPen = pDC->SelectObject (&m_penBack);
pDC->FillRect (rect,&m_brBackground);
pDC->SelectObject (pOldPen);
// draw the up edges
pDC->Draw3dRect (rect,m_clrBack,m_clrBack);
if ((HFONT)dispFont != NULL)
dispFont.DeleteObject ();
dispFont.CreateFontIndirect (&lf); //Normal
TRACE0 ("SELECT, NORMAL\n");
}
// draw the text if there is any
//We have to paint the text only if the image is nonexistant
if (hIcon != NULL)
{
if(DrawIconEx (pDC->GetSafeHdc(),rect.left,rect.top,hIcon,
(m_iconX)?m_iconX:32,(m_iconY)?m_iconY:32,0,NULL,DI_NORMAL))
TRACE0("Wrote the icon successfully\n");
else
TRACE0 ("SORRY.NOGO\n");
}
//This is needed always so that we can have the space for check marks
rect.left = rect.left +((m_iconX)?m_iconX:32);
if ( !strText.IsEmpty())
{
// pFont->GetLogFont (&lf);
int iOldMode = pDC->GetBkMode();
pDC->SetBkMode( TRANSPARENT);
pDC->SetTextColor( crText);
pFont = pDC->SelectObject (&dispFont);
TRACE1( "About To DrawText %s\n",strText);
pDC->DrawText (strText,rect,DT_LEFT|DT_SINGLELINE|DT_VCENTER);
TRACE0("Done\n");
pDC->SetBkMode( iOldMode );
pDC->SelectObject (pFont); //set it to the old font
}
dispFont.DeleteObject ();
}
void CCustomMenu::MeasureItem( LPMEASUREITEMSTRUCT lpMIS )
{
CDC *pDC = AfxGetApp()->m_pMainWnd->GetDC();
CFont* pFont = pDC->SelectObject (&m_fontMenu);
int iconX = 0,iconY= 0;
TEXTMETRIC tm;
pDC->GetTextMetrics (&tm);
pDC->SelectObject (pFont);
AfxGetApp()->m_pMainWnd->ReleaseDC (pDC);
if (m_iconX)
iconX = m_iconX;
if (m_iconY)
iconY = m_iconY;
lpMIS->itemWidth = iconX + tm.tmAveCharWidth * lstrlen(((MENUDATA*)(lpMIS->itemData))->menuText) +10;
lpMIS->itemHeight = (iconY > (m_iMenuHeight+1))?iconY:m_iMenuHeight + 1;
}
void CCustomMenu::SetIconSize (int width, int height)
{
m_iconX = width;
m_iconY = height;
}
void CCustomMenu::SetTextColor (COLORREF clrText)
{
m_crText = clrText;
}
void CCustomMenu::SetBackColor (COLORREF clrBack)
{
m_clrBack = clrBack;
if ((HBRUSH)m_brBackground != NULL)
m_brBackground.DeleteObject ();
m_brBackground.CreateSolidBrush (clrBack);
}
void CCustomMenu::SetHighlightColor (COLORREF clrHilight)
{
m_clrHilight = clrHilight;
if ((HBRUSH)m_brSelect != NULL)
m_brSelect.DeleteObject ();
m_brSelect.CreateSolidBrush (clrHilight);
}
void CCustomMenu::SetHighlightTextColor (COLORREF clrHilightText)
{
m_clrHilightText = clrHilightText;
}
void CCustomMenu::SetHighlightStyle (HIGHLIGHTSTYLE hilightStyle)
{
m_hilightStyle = hilightStyle;
}
//*************************************************************************

[hawkxjy]

好长的代码，现在菜单项大小的问题解决了；剩下的问题就是如何把菜单边上的那么一小部分刷上自定义的颜色。我用了WM_NCPAINT试过，不能够即刻刷新，效果不理想啊~~~

烦劳哪个大哥费神给点代码或意见，咋来把颜色刷上去呢？？

[hawkxjy]

还是没搞定边框绘制的问题