自定义彩色static text控件类，怎么设置控件背景透明

Question

不是设置文字的背景透明，请看代码.h文件#pragma once// CColorStatic
class CColorStatic : public CStatic
{
DECLARE_DYNAMIC(CColorStatic)public:
CColorStatic();
virtual ~CColorStatic();
afx_msg HBRUSH CtlColor( CDC* pDC, UINT nCtlColor ); void SetTextColor( COLORREF crText );
void SetTransparent( bool bTran );
void SetBackColor( COLORREF crBackColor );protected:
DECLARE_MESSAGE_MAP() COLORREF m_crTextColor;
COLORREF m_crBackColor;
HBRUSH m_hBrush;            
bool m_bTran;
};cpp文件#include "stdafx.h"
#include "test.h"
#include "ColorStatic.h"
// CColorStaticIMPLEMENT_DYNAMIC(CColorStatic, CStatic)CColorStatic::CColorStatic()
: m_bTran(0)
, m_crTextColor( RGB( 0, 0, 0 ) )
, m_crBackColor( RGB( 240, 240, 240 ) )
{}CColorStatic::~CColorStatic()
{
}
BEGIN_MESSAGE_MAP( CColorStatic, CStatic )
ON_WM_CTLCOLOR_REFLECT()
END_MESSAGE_MAP()// CColorStatic message handlers
HBRUSH CColorStatic::CtlColor( CDC* pDC, UINT nCtlColor )  
{
if (CTLCOLOR_STATIC == nCtlColor)      
{        
pDC->SetTextColor( m_crTextColor ); 
pDC->SetBkColor( m_crBackColor );
if (m_bTran == true)             
pDC->SetBkMode(TRANSPARENT); 
}      
return m_hBrush;
}void CColorStatic::SetTextColor( COLORREF crText )  
{      
m_crTextColor = crText;
RedrawWindow();  
}  void CColorStatic::SetTransparent( bool bTran )  
{      
m_bTran = bTran;
RedrawWindow();  
}  void CColorStatic::SetBackColor( COLORREF crBackColor )  
{      
m_crBackColor = crBackColor;      
RedrawWindow();  
}  SetBackColor，还有SetTransparent，都只能改变文字的背景，不能改变控件的背景。SetTransparent 之后，只是文字的背景透明了，但是控件的背景一直是白色不透明的，如果控件拖很大的话会有很大一片白色。
在属性里面设置Transparent也是不行的。怎么让控件背景透明？

Answer 1

你试下 在oninitdialog 里面 加入 ModifyStyleEx(0,WS_EX_TRANSPARENT);

Answer 2

CtlColor里return (HBRUSH)GetStockObject(NULL_BRUSH);

Answer 3

这是个控件，没有oninitdialog
我在其他地方加了ModifyStyleEx(0,WS_EX_TRANSPARENT);没用

Answer 4

如果return (HBRUSH)GetStockObject(NULL_BRUSH);
的话，以前的就不会被擦掉，会出现2个statictext测试如下代码 LOGFONT lf = {0};
CPaintDC dc(this);
dc.GetCurrentFont()->GetLogFont(&lf);
lf.lfCharSet = GB2312_CHARSET;
lstrcpy(lf.lfFaceName, TEXT( "Arial" ) ); 
lf.lfHeight = 20;
lf.lfWidth = 12; CFont font;
font.CreateFontIndirect( &lf ); 
m_static123.SetFont( &font );

Answer 5

这是 以前写的 你可以参照下.#if !defined(AFX_MYSTATIC_H__0DA3C73A_2538_46C5_9EE7_6E41E9DA3896__INCLUDED_)
#define AFX_MYSTATIC_H__0DA3C73A_2538_46C5_9EE7_6E41E9DA3896__INCLUDED_#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// TStatic.h : header file
///////////////////////////////////////////////////////////////////////////////
// TStatic windowclass TStatic : public CStatic
{
// Construction
public:
TStatic(); // Attributes
public:
enum Type3D { Raised, Sunken};
enum FlashType {None, Text, Background }; // Operations
public: // Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CMyStatic)
//}}AFX_VIRTUAL // Implementation
public:
virtual ~TStatic();
virtual TStatic& SetBkColor(COLORREF crBkgnd);
virtual TStatic& SetTextColor(COLORREF crText);
virtual TStatic& SetText(const CString& strText);
virtual TStatic& SetFontBold(BOOL bBold);
virtual TStatic& SetFontName(const CString& strFont);
virtual TStatic& SetFontUnderline(BOOL bSet);
virtual TStatic& SetFontItalic(BOOL bSet);
virtual TStatic& SetFontSize(int nSize);
virtual TStatic& SetSunken(BOOL bSet);
virtual TStatic& SetBorder(BOOL bSet);
virtual TStatic& SetTransparent(BOOL bSet);
virtual TStatic& FlashText(BOOL bActivate);
virtual TStatic& FlashBackground(BOOL bActivate);
virtual TStatic& SetLink(BOOL bLink,BOOL bNotifyParent);
virtual TStatic& SetLinkCursor(HCURSOR hCursor);
virtual TStatic& SetFont3D(BOOL bSet,Type3D type=Raised);
virtual TStatic& SetRotationAngle(UINT nAngle,BOOL bRotation);
virtual TStatic& SetText3DHiliteColor(COLORREF cr3DHiliteColor); void SetLinkWord(BOOL isLinkWord);
// Generated message map functions
protected:
//{{AFX_MSG(CMyStatic)
afx_msg void OnMouseMove(UINT nFlags, CPoint point);
afx_msg void OnPaint();
afx_msg BOOL OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message);
afx_msg void OnSysColorChange(); //}}AFX_MSG
afx_msg HRESULT OnMouseHover(WPARAM wParam, LPARAM lParam);
afx_msg HRESULT OnMouseLeave(WPARAM wParam, LPARAM lParam);
DECLARE_MESSAGE_MAP()private:
void ReconstructFont();
COLORREF m_crText;
COLORREF m_cr3DHiliteColor;
HBRUSH m_hwndBrush;
HBRUSH m_hBackBrush;
LOGFONT m_lf;
CFont m_font;
CString m_strText;
BOOL m_bState;
BOOL m_bTimer;
BOOL m_bLink;
BOOL m_bTransparent;
BOOL m_bFont3d;
BOOL m_bToolTips;
BOOL m_bNotifyParent;
BOOL m_bRotation;
BOOL m_bHover;
BOOL m_bHotTrack;
BOOL m_isLinkWord;
FlashType m_Type;
HCURSOR m_hCursor;
Type3D m_3dType;public:
afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
};///////////////////////////////////////////////////////////////////////////////{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.#endif // !defined(AFX_MYSTATIC_H__0DA3C73A_2538_46C5_9EE7_6E41E9DA3896__INCLUDED_)

Answer 6

#include "stdafx.h"
#include "TStatic.h"
#include ".\tstatic.h"#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif/////////////////////////////////////////////////////////////////////////////
// TStaticTStatic::TStatic()
{
m_crText = GetSysColor(COLOR_WINDOWTEXT);
m_hBackBrush = NULL;
::GetObject((HFONT)GetStockObject(DEFAULT_GUI_FONT),sizeof(m_lf),&m_lf);
m_font.CreateFontIndirect(&m_lf);
m_bTimer = FALSE;
m_bState = FALSE;
m_bTransparent = FALSE;
m_bLink = TRUE;
m_hCursor = NULL;
m_Type = None;
m_bFont3d = FALSE;
m_bNotifyParent = FALSE;
m_bToolTips = FALSE;
m_bRotation = FALSE;
m_bHover = FALSE;
m_isLinkWord = FALSE;
m_bHotTrack = FALSE;
m_cr3DHiliteColor = RGB(255,255,255);
m_hwndBrush = ::CreateSolidBrush(RGB(255,255,255));}TStatic::~TStatic()
{
m_font.DeleteObject();
::DeleteObject(m_hwndBrush);
::DeleteObject(m_hBackBrush);
::DeleteObject(m_hCursor);
OutputDebugString("Clear Static text:");
CString strText;
GetWindowText(strText);
OutputDebugString(strText);
OutputDebugString("\n");
}
BEGIN_MESSAGE_MAP(TStatic, CStatic)
//{{AFX_MSG_MAP(TStatic)
ON_WM_MOUSEMOVE()
ON_WM_SETCURSOR()
ON_WM_SYSCOLORCHANGE()
//}}AFX_MSG_MAP
ON_MESSAGE(WM_MOUSEHOVER,OnMouseHover)
ON_MESSAGE(WM_MOUSELEAVE,OnMouseLeave)
ON_WM_PAINT()
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONUP()
END_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////
// TStatic message handlers
void TStatic::ReconstructFont()
{
m_font.DeleteObject();
BOOL bCreated = m_font.CreateFontIndirect(&m_lf); ASSERT(bCreated);
}void TStatic::OnMouseMove(UINT nFlags, CPoint point) 
{
// TODO: Add your message handler code here and/or call default
//SetWindowText("鼠标进入");
TRACKMOUSEEVENT tme; 
tme.cbSize = sizeof(tme); 
tme.hwndTrack = m_hWnd; 
tme.dwFlags = TME_LEAVE | TME_HOVER; 
tme.dwHoverTime = 1; 
_TrackMouseEvent(&tme); 
if (m_bHover) // Cursor is currently over control    
{         
CRect rect;        
GetClientRect(rect);        
if (!rect.PtInRect(point))        
{             
m_bHover = FALSE;            
this->Invalidate();            
::ReleaseCapture();         
}     
}    
else   // Cursor has just moved over control    
{         
m_bHover = TRUE;        
this->Invalidate();        
this->SetCapture();        
if (m_bHotTrack)            
::SetCursor(::LoadCursor(NULL, MAKEINTRESOURCE(32649)));
}
CStatic::OnMouseMove(nFlags, point);
}HRESULT TStatic::OnMouseHover(WPARAM wParam, LPARAM lParam)
{
if (m_isLinkWord)
{
//绘制字体颜色
m_crText = RGB(0,0,0);
Invalidate();
}
return S_OK;
}
HRESULT TStatic::OnMouseLeave(WPARAM wParam, LPARAM lParam)
{
if (m_isLinkWord)
{
//绘制字体颜色
m_crText = RGB(0,0,255);
Invalidate();
}
return S_OK;
}void TStatic::SetLinkWord(BOOL isLinkWord)
{
m_isLinkWord = isLinkWord;
if (m_isLinkWord)
{
m_crText = RGB(0,0,255);
Invalidate();
}
}
void TStatic::OnPaint()
{
CPaintDC dc(this); // device context for painting DWORD dwFlags = 0; CRect rc;
GetClientRect(rc);
CString strText;
GetWindowText(strText);
CBitmap bmp; // Set up for double buffering...
CDC* pDCMem; if (!m_bTransparent)
{
pDCMem = new CDC;
pDCMem->CreateCompatibleDC(&dc);
bmp.CreateCompatibleBitmap(&dc,rc.Width(),rc.Height());
pDCMem->SelectObject(&bmp);
}
else
{
pDCMem = GetDC();
} UINT nMode = pDCMem->SetBkMode(TRANSPARENT); COLORREF crText = pDCMem->SetTextColor(m_crText);
CFont *pOldFont = pDCMem->SelectObject(&m_font); // Fill in backgound if not transparent
if (!m_bTransparent)
{
CBrush br; if (m_bState && m_Type == Background)
{
if (m_hBackBrush != NULL)
br.Attach(m_hBackBrush);
else
br.Attach(m_hwndBrush);
}
else
{
if (m_hBackBrush != NULL)
br.Attach(m_hBackBrush);
else
br.Attach(m_hwndBrush);
} pDCMem->FillRect(rc,&br);
br.Detach();
br.DeleteObject();
} // If the text is flashing turn the text color on
// then to the color of the window background. LOGBRUSH lb;
ZeroMemory(&lb,sizeof(lb));
::GetObject(m_hBackBrush,sizeof(lb),&lb); // Something to do with flashing
if (!m_bState && m_Type == Text)
pDCMem->SetTextColor(lb.lbColor); if (!(GetStyle() & SS_LEFTNOWORDWRAP))
dwFlags |= DT_WORDBREAK; if (GetStyle() & SS_LEFT)
dwFlags = DT_LEFT; if (GetStyle() & SS_RIGHT)
dwFlags = DT_RIGHT; if (GetStyle() & SS_CENTER)
dwFlags = DT_CENTER; // If the text centered make an assumtion that
// the will want to center verticly as well
if (GetStyle() & SS_CENTERIMAGE)
{
dwFlags = DT_CENTER; // Apply 
if (strText.Find("\r\n") == -1)
{
dwFlags |= DT_VCENTER;
// And because DT_VCENTER only works with single lines
dwFlags |= DT_SINGLELINE; 
}
} // 3D旋转效果
if (m_bRotation)
{
int nAlign = pDCMem->SetTextAlign (TA_BASELINE); CPoint pt;
GetViewportOrgEx (pDCMem->m_hDC,&pt) ;
SetViewportOrgEx (pDCMem->m_hDC,rc.Width() / 2, rc.Height() / 2, NULL) ;
pDCMem->TextOut (0, 0, strText) ;
SetViewportOrgEx (pDCMem->m_hDC,pt.x / 2, pt.y / 2, NULL) ;
pDCMem->SetTextAlign (nAlign);
}
else
{
pDCMem->DrawText(strText,rc,dwFlags);
if (m_bFont3d)
{
pDCMem->SetTextColor(m_cr3DHiliteColor); if (m_3dType == Raised)
rc.OffsetRect(-1,-1);
else
rc.OffsetRect(1,1); pDCMem->DrawText(strText,rc,dwFlags);
}
} // Restore DC's State
pDCMem->SetBkMode(nMode);
pDCMem->SelectObject(pOldFont);
pDCMem->SetTextColor(crText); if (!m_bTransparent)
{
dc.BitBlt(0,0,rc.Width(),rc.Height(),pDCMem,0,0,SRCCOPY);
pDCMem->DeleteDC();
delete pDCMem;
bmp.DeleteObject();
return;
}
bmp.DeleteObject();
ReleaseDC(pDCMem);
}BOOL TStatic::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) 
{
if (m_hCursor)
{
::SetCursor(m_hCursor);
return TRUE;
}
return CStatic::OnSetCursor(pWnd, nHitTest, message);
}
TStatic& TStatic::SetText(const CString& strText)
{
SetWindowText(strText);
Invalidate(FALSE); return *this;
}
TStatic& TStatic::SetTextColor(COLORREF crText)
{
m_crText = crText;
RedrawWindow();
return *this;
}
TStatic& TStatic::SetFontBold(BOOL bBold)
{
m_lf.lfWeight = bBold ? FW_BOLD : FW_NORMAL;
ReconstructFont();
RedrawWindow();
return *this;
}
TStatic& TStatic::SetFontUnderline(BOOL bSet)
{
m_lf.lfUnderline = bSet;
ReconstructFont();
RedrawWindow();
return *this;
}
TStatic& TStatic::SetFontItalic(BOOL bSet)
{
m_lf.lfItalic = bSet;
ReconstructFont();
RedrawWindow();
return *this;
}
TStatic& TStatic::SetSunken(BOOL bSet)
{
if (!bSet)
ModifyStyleEx(WS_EX_STATICEDGE,0,SWP_DRAWFRAME);
else
ModifyStyleEx(0,WS_EX_STATICEDGE,SWP_DRAWFRAME);
return *this;
}TStatic& TStatic::SetBorder(BOOL bSet)
{
if (!bSet)
ModifyStyle(WS_BORDER,0,SWP_DRAWFRAME);
else
ModifyStyle(0,WS_BORDER,SWP_DRAWFRAME);
return *this;
}TStatic& TStatic::SetFontSize(int nSize)
{
CFont cf;
LOGFONT lf; cf.CreatePointFont(nSize * 10, m_lf.lfFaceName);
cf.GetLogFont(&lf);
m_lf.lfHeight = lf.lfHeight;
m_lf.lfWidth  = lf.lfWidth;
ReconstructFont();
RedrawWindow();
return *this;
}TStatic& TStatic::SetBkColor(COLORREF crBkgnd)
{
if (m_hBackBrush)
::DeleteObject(m_hBackBrush);
m_hBackBrush = ::CreateSolidBrush(crBkgnd);
Invalidate(FALSE);
return *this;
}TStatic& TStatic::SetFontName(const CString& strFont)
{
strcpy(m_lf.lfFaceName,strFont);
ReconstructFont();
RedrawWindow();
return *this;
}TStatic& TStatic::FlashText(BOOL bActivate)
{
if (m_bTimer)
KillTimer(1); if (bActivate)
{
m_bState = FALSE;
m_bTimer = TRUE;
SetTimer(1,500,NULL);
m_Type = Text;
}
else
m_Type = None;
return *this;
}TStatic& TStatic::FlashBackground(BOOL bActivate)
{
if (m_bTimer)
KillTimer(1); if (bActivate)
{
m_bState = FALSE;
m_bTimer = TRUE;
SetTimer(1,500,NULL);
m_Type = Background;
}
return *this;
}TStatic& TStatic::SetLink(BOOL bLink,BOOL bNotifyParent)
{ m_bLink = bLink;
m_bNotifyParent = bNotifyParent; if (bLink)
ModifyStyle(0,SS_NOTIFY);
else
ModifyStyle(SS_NOTIFY,0); return *this;
}TStatic& TStatic::SetLinkCursor(HCURSOR hCursor)
{ m_hCursor = hCursor;
return *this;
}TStatic& TStatic::SetTransparent(BOOL bSet)
{ m_bTransparent = bSet;
ModifyStyleEx(0,WS_EX_TRANSPARENT);
InvalidateRect(NULL,TRUE);
UpdateWindow();
return *this;
}TStatic& TStatic::SetFont3D(BOOL bSet,Type3D type)
{
m_bFont3d = bSet;
m_3dType = type;
RedrawWindow();
return *this;
}void TStatic::OnSysColorChange() 
{
if (m_hwndBrush)
::DeleteObject(m_hwndBrush);
m_hwndBrush = ::CreateSolidBrush(GetSysColor(COLOR_3DFACE));
RedrawWindow();
}TStatic& TStatic::SetRotationAngle(UINT nAngle,BOOL bRotation)
{
m_lf.lfEscapement = m_lf.lfOrientation = (nAngle * 10);
m_bRotation = bRotation;
ReconstructFont();
RedrawWindow();
return *this;
}TStatic& TStatic::SetText3DHiliteColor(COLORREF cr3DHiliteColor)
{
m_cr3DHiliteColor = cr3DHiliteColor;
RedrawWindow();
return *this;
}
void TStatic::OnLButtonDown(UINT nFlags, CPoint point)
{
// TODO: 在此添加消息处理程序代码和/或调用默认值
m_crText = RGB(255,0,0);
Invalidate(TRUE);
CStatic::OnLButtonDown(nFlags, point);
}void TStatic::OnLButtonUp(UINT nFlags, CPoint point)
{
// TODO: 在此添加消息处理程序代码和/或调用默认值
m_crText = RGB(0,0,255);
Invalidate(TRUE);
CStatic::OnLButtonUp(nFlags, point);
}

Answer 7

响应WM_ERASEBKGND 直接返回TRUE