MFC - 一个静态控件文本控件的改变文字颜色(MFC - change text color o

2019-09-01 22:20发布

如何改变一个静态控件文本控件的文本颜色? 有一个简单的方法等,使用CDC :: SetTextColor?

谢谢...

Answer 1:

您可以实现ON_WM_CTLCOLOR在对话框类中,而无需创建一个新的CStatic派生类:

BEGIN_MESSAGE_MAP(CMyDialog, CDialog)
    //{{AFX_MSG_MAP(CMyDialog)
    ON_WM_CTLCOLOR()
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

HBRUSH CMyDialog::OnCtlColor(CDC* pDC, CWnd *pWnd, UINT nCtlColor)
{
    switch (nCtlColor)
    {
    case CTLCOLOR_STATIC:
        pDC->SetTextColor(RGB(255, 0, 0));
        return (HBRUSH)GetStockObject(NULL_BRUSH);
    default:
        return CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
    }
}

请注意,上面的代码将所有静态控件的对话框中文字。 但是你可以使用pWnd变量来过滤你想要的控制。



Answer 2:

不幸的是,你不会找到在静态控件类SetTextColor方法。 如果你想改变一个静态控件的文本颜色,你将不得不编写多一点。

在我看来,最好的办法是创建自己的CStatic派生类(CMyStatic),并有cacth的ON_WM_CTLCOLOR_REFLECT通知消息。

BEGIN_MESSAGE_MAP(CMyStatic, CStatic)
    //{{AFX_MSG_MAP(CMyStatic)
    ON_WM_CTLCOLOR_REFLECT()
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

HBRUSH CColorStatic::CtlColor(CDC* pDC, UINT nCtlColor) 
{
    pDC->SetTextColor(RGB(255,0,0)); 

    return (HBRUSH)GetStockObject(NULL_BRUSH);  
}

显然,你可以使用一个成员变量和setter方法来取代红色(RGB(255,0,0))。

问候。



Answer 3:

只是跟进的涂装问题(透明背景),这引起*回报(HBRUSH)GetStockObject(NULL_BRUSH); *

易变化如下:

HBRUSH hBrush = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

if (nCtlColor == CTLCOLOR_STATIC &&
    pWnd->GetSafeHwnd() == GetDlgItem(XXX)->GetSafeHwnd()
) pDC->SetTextColor(RGB(255, 0, 0));    

return hBrush;

希望这可以帮助。



Answer 4:

从这里给出的答案和其他地方,这一点不明确如何创建要用来代替静态控件,处理着色本身就是一个派生类。

所以,下面是我什么工作,使用MSVS 2013版12.0.40629.00更新5.我可以将在资源编辑器“静态文本” - 对照,然后替换TColorText成员变量的类型。

在.H文件:

class TColorText : public CStatic
{
protected:
  DECLARE_MESSAGE_MAP( )

public:
  // make the background transparent (or if ATransparent == true, restore the previous background color)
  void setTransparent( bool ATransparent = true );
  // set background color and make the background opaque
  void SetBackgroundColor( COLORREF );
  void SetTextColor( COLORREF );

protected:
  HBRUSH CtlColor( CDC* pDC, UINT nCtlColor );

private:
  bool MTransparent = true;
  COLORREF MBackgroundColor = RGB( 255, 255, 255 );  // default is white (in case someone sets opaque without setting a color)
  COLORREF MTextColor = RGB( 0, 0, 0 );  // default is black. it would be more clean 
                                         // to not use the color before set with SetTextColor(..), but whatever...
};

在的.cpp文件:

void TColorText::setTransparent( bool ATransparent )
{
  MTransparent = ATransparent;
  Invalidate( );
}

void TColorText::SetBackgroundColor( COLORREF AColor )
{
  MBackgroundColor = AColor;
  MTransparent = false;
  Invalidate( );
}

void TColorText::SetTextColor( COLORREF AColor )
{
  MTextColor = AColor;
  Invalidate( );
}

BEGIN_MESSAGE_MAP( TColorText, CStatic )
  ON_WM_CTLCOLOR_REFLECT( )
END_MESSAGE_MAP( )

HBRUSH TColorText::CtlColor( CDC* pDC, UINT nCtlColor )
{
  pDC->SetTextColor( MTextColor );
  pDC->SetBkMode( TRANSPARENT );  // we do not want to draw background when drawing text. 
                                  // background color comes from drawing the control background.
  if( MTransparent )
    return nullptr;  // return nullptr to indicate that the parent object 
                     // should supply the brush. it has the appropriate background color.
  else
    return (HBRUSH) CreateSolidBrush( MBackgroundColor );  // color for the empty area of the control
}


Answer 5:

很有帮助。

https://msdn.microsoft.com/de-de/library/0wwk06hc.aspx

都到

HBRUSH hBrush = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
if (nCtlColor == CTLCOLOR_STATIC &&
    pWnd->GetSafeHwnd() == GetDlgItem(XXX)->GetSafeHwnd()
) pDC->SetTextColor(RGB(255, 0, 0));    
return hBrush;


文章来源: MFC - change text color of a cstatic text control