Bitmap Button 不可用的情况

一行乱码 2009-12-08 05:13:33

根据CButtonST类写了一个可以加载Bitmap 、Icon的按钮

但是缺陷是设置Bitmap按钮为不可用的时候

按钮就变成一个灰色框框

想实现设置Bitmap按钮为不可用的时候只是让Bitmap变为灰色

这个怎么实现啊

望高手赐教

PS：下面是CButtonST类中重画Bitmap的代码



void CButtonST::DrawTheBitmap(CDC* pDC, BOOL bHasTitle, RECT* rpItem, CRect* rpCaption, BOOL bIsPressed, BOOL bIsDisabled)

{

	HDC			hdcBmpMem	= NULL;

	HBITMAP		hbmOldBmp	= NULL;

	HDC			hdcMem		= NULL;

	HBITMAP		hbmT		= NULL;



	BYTE		byIndex		= 0;



	// Select the bitmap to use

	if ((m_bIsCheckBox && bIsPressed) || (!m_bIsCheckBox && (bIsPressed || m_bMouseOnButton)))

		byIndex = 0;

	else

		byIndex = (m_csBitmaps[1].hBitmap == NULL ? 0 : 1);



	CRect	rImage;

	PrepareImageRect(bHasTitle, rpItem, rpCaption, bIsPressed, m_csBitmaps[byIndex].dwWidth, m_csBitmaps[byIndex].dwHeight, &rImage);



	hdcBmpMem = ::CreateCompatibleDC(pDC->m_hDC);



	hbmOldBmp = (HBITMAP)::SelectObject(hdcBmpMem, m_csBitmaps[byIndex].hBitmap);



	hdcMem = ::CreateCompatibleDC(NULL);



	hbmT = (HBITMAP)::SelectObject(hdcMem, m_csBitmaps[byIndex].hMask);



	if (bIsDisabled && m_bShowDisabledBitmap) //按钮为不可用的时候的处理代码 m_bShowDisabledBitmap为TRUE

	{

		HDC		hDC = NULL;

		HBITMAP	hBitmap = NULL;



		hDC = ::CreateCompatibleDC(pDC->m_hDC);

		hBitmap = ::CreateCompatibleBitmap(pDC->m_hDC, m_csBitmaps[byIndex].dwWidth, m_csBitmaps[byIndex].dwHeight);

		HBITMAP	hOldBmp2 = (HBITMAP)::SelectObject(hDC, hBitmap);



		RECT	rRect;

		rRect.left = 0;

		rRect.top = 0;

		rRect.right = rImage.right + 1;

		rRect.bottom = rImage.bottom + 1;

		::FillRect(hDC, &rRect, (HBRUSH)RGB(255, 255, 255));



		COLORREF crOldColor = ::SetBkColor(hDC, RGB(255,255,255));



		::BitBlt(hDC, 0, 0, m_csBitmaps[byIndex].dwWidth, m_csBitmaps[byIndex].dwHeight, hdcMem, 0, 0, SRCAND);

		::BitBlt(hDC, 0, 0, m_csBitmaps[byIndex].dwWidth, m_csBitmaps[byIndex].dwHeight, hdcBmpMem, 0, 0, SRCPAINT);



		::SetBkColor(hDC, crOldColor);

		::SelectObject(hDC, hOldBmp2);

		::DeleteDC(hDC);



		pDC->DrawState(	CPoint(rImage.left/*+1*/, rImage.top), 

						CSize(m_csBitmaps[byIndex].dwWidth, m_csBitmaps[byIndex].dwHeight), 

						hBitmap, DST_BITMAP | DSS_DISABLED);



		::DeleteObject(hBitmap);

	} // if

	else

	{

		::BitBlt(pDC->m_hDC, rImage.left, rImage.top, m_csBitmaps[byIndex].dwWidth, m_csBitmaps[byIndex].dwHeight, hdcMem, 0, 0, SRCAND);



		::BitBlt(pDC->m_hDC, rImage.left, rImage.top, m_csBitmaps[byIndex].dwWidth, m_csBitmaps[byIndex].dwHeight, hdcBmpMem, 0, 0, SRCPAINT);

	} // else



	::SelectObject(hdcMem, hbmT);

	::DeleteDC(hdcMem);



	::SelectObject(hdcBmpMem, hbmOldBmp);

	::DeleteDC(hdcBmpMem);

} // End of DrawTheBitmap

...全文

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mazm_yanzhu 2009-12-09

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设置为不可用后按钮应该还要重绘，不能用默认的重绘

菜鸟二号 2009-12-09

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[Quote=引用 2 楼 nintendo_dskay 的回复:]
调整一下bmp灰度再贴上去按钮上吧
[/Quote]
赞成，在按钮废止时（其实未废止，仅仅是你不让其相应，方法是onclick加上返回），然后显示灰色的位图，然后就形成了那种变灰废止的效果

一行乱码 2009-12-09

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厄这个是CButtonSt中的将彩色Bitmap转换成灰度图的代码：



HBITMAP CButtonST::CreateGrayscaleBitmap(HBITMAP hBitmap, 

                                         DWORD dwWidth, 

                                         DWORD dwHeight, 

                                         COLORREF crTrans)

{

	HBITMAP		hGrayBitmap = NULL;

	HDC			hMainDC = NULL, hMemDC1 = NULL, hMemDC2 = NULL;

	HBITMAP		hOldBmp1 = NULL, hOldBmp2 = NULL;



	hMainDC = ::GetDC(NULL);

	if (hMainDC == NULL)	return NULL;

	hMemDC1 = ::CreateCompatibleDC(hMainDC);

	if (hMemDC1 == NULL)

	{

		::ReleaseDC(NULL, hMainDC);

		return NULL;

	} // if

	hMemDC2 = ::CreateCompatibleDC(hMainDC);

	if (hMemDC2 == NULL)

	{

		::DeleteDC(hMemDC1);

		::ReleaseDC(NULL, hMainDC);

		return NULL;

	} // if



	hGrayBitmap = ::CreateCompatibleBitmap(hMainDC, dwWidth, dwHeight);

	if (hGrayBitmap)

	{

		hOldBmp1 = (HBITMAP)::SelectObject(hMemDC1, hGrayBitmap);

		hOldBmp2 = (HBITMAP)::SelectObject(hMemDC2, hBitmap);



		//::BitBlt(hMemDC1, 0, 0, dwWidth, dwHeight, hMemDC2, 0, 0, SRCCOPY);



		DWORD		dwLoopY = 0, dwLoopX = 0;

		COLORREF	crPixel = 0;

		BYTE		byNewPixel = 0;



		for (dwLoopY = 0; dwLoopY < dwHeight; dwLoopY++)

		{

			for (dwLoopX = 0; dwLoopX < dwWidth; dwLoopX++)

			{

				crPixel = ::GetPixel(hMemDC2, dwLoopX, dwLoopY);

				byNewPixel = (BYTE)((GetRValue(crPixel) * 0.299) + (GetGValue(crPixel) * 0.587) + (GetBValue(crPixel) * 0.114));



				if (crPixel != crTrans)

					::SetPixel(hMemDC1, dwLoopX, dwLoopY, RGB(byNewPixel, byNewPixel, byNewPixel));

				else

					::SetPixel(hMemDC1, dwLoopX, dwLoopY, crPixel);

			} // for

		} // for



		::SelectObject(hMemDC1, hOldBmp1);

		::SelectObject(hMemDC2, hOldBmp2);

	} // if



	::DeleteDC(hMemDC1);

	::DeleteDC(hMemDC2);

	::ReleaseDC(NULL, hMainDC);



	return hGrayBitmap;

} // End of CreateGrayscaleBitmap

一行乱码 2009-12-09

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哇咔咔自己解决啦
说一下实现的思想：就是2楼和3楼的，实现将彩色Bitmap转换成灰色Bitmap
最后重绘灰度Bitmap

我很不HD的使用了CButtonST中的彩色Bitmap向灰度Bitmap转换的函数实现
下面是实现以后的代码大家自己看看吧



void CButtonST::DrawTheBitmap(CDC* pDC, 

                              BOOL bHasTitle, 

                              RECT* rpItem, 

                              CRect* rpCaption, 

                              BOOL bIsPressed, 

                              BOOL bIsDisabled) //按钮是否可用

{

	HDC			hdcBmpMem	= NULL;

	HBITMAP		hbmOldBmp	= NULL;

	HDC			hdcMem		= NULL;

	HBITMAP		hbmT		= NULL;

  STRUCT_BITMAPS grayBitmap;

	BYTE		byIndex		= 0;



	// Select the bitmap to use

	if ((m_bIsCheckBox && bIsPressed) || (!m_bIsCheckBox && (bIsPressed || m_bMouseOnButton)))

		byIndex = 0;

	else

		byIndex = (m_csBitmaps[1].hBitmap == NULL ? 0 : 1);

  

  CRect	rImage;

	PrepareImageRect(bHasTitle, rpItem, rpCaption, bIsPressed, m_csBitmaps[byIndex].dwWidth, m_csBitmaps[byIndex].dwHeight, &rImage);



	hdcBmpMem = ::CreateCompatibleDC(pDC->m_hDC);

  hdcMem = ::CreateCompatibleDC(NULL); 



  if (bIsDisabled && (NULL == m_csBitmaps[1].hBitmap))//创建灰色图像

  {

    grayBitmap.hBitmap = CreateGrayscaleBitmap(m_csBitmaps[0].hBitmap,       //Bitmap ID

                                               m_csBitmaps[0].dwWidth,

                                               m_csBitmaps[0].dwHeight,

                                               m_csBitmaps[0].crTransparent);

    grayBitmap.dwWidth = m_csBitmaps[0].dwWidth;

    grayBitmap.dwHeight = m_csBitmaps[0].dwHeight;

    grayBitmap.crTransparent = m_csBitmaps[0].crTransparent;

    grayBitmap.hMask = CreateBitmapMask( grayBitmap.hBitmap,

                                         grayBitmap.dwWidth,

                                         grayBitmap.dwHeight,

                                         grayBitmap.crTransparent);

    hbmOldBmp = (HBITMAP)::SelectObject(hdcBmpMem, grayBitmap.hBitmap);

    hbmT = (HBITMAP)::SelectObject(hdcMem, grayBitmap.hMask);

  }else

  {

	  hbmOldBmp = (HBITMAP)::SelectObject(hdcBmpMem, m_csBitmaps[byIndex].hBitmap);

    hbmT = (HBITMAP)::SelectObject(hdcMem, m_csBitmaps[byIndex].hMask);

  }



	if (bIsDisabled && m_bShowDisabledBitmap)     //button disabled

	{

		HDC		hDC = NULL;

		HBITMAP	hBitmap = NULL;



    hDC = ::CreateCompatibleDC(pDC->m_hDC);

		hBitmap = ::CreateCompatibleBitmap(pDC->m_hDC, 

                                       m_csBitmaps[byIndex].dwWidth, 

                                       m_csBitmaps[byIndex].dwHeight);

		HBITMAP	hOldBmp2 = (HBITMAP)::SelectObject(hDC, hBitmap);



		COLORREF crOldColor = ::SetBkColor(hDC, RGB(255,255,255));



    ::BitBlt(hDC, 0, 0, 

             m_csBitmaps[byIndex].dwWidth, 

             m_csBitmaps[byIndex].dwHeight, 

             hdcMem, 0, 0, SRCAND);

		::BitBlt(hDC, 0, 0, 

             m_csBitmaps[byIndex].dwWidth, 

             m_csBitmaps[byIndex].dwHeight, 

             hdcBmpMem, 0, 0, SRCPAINT);



		::SetBkColor(hDC, crOldColor);

		::SelectObject(hDC, hOldBmp2);

		::DeleteDC(hDC);



		pDC->DrawState(	CPoint(rImage.left/*+1*/, rImage.top), 

						CSize(m_csBitmaps[byIndex].dwWidth, m_csBitmaps[byIndex].dwHeight), 

            hBitmap, DST_BITMAP | DSS_NORMAL);



		::DeleteObject(hBitmap);

	} // if

	else        //button abled

	{

		::BitBlt(pDC->m_hDC, 

             rImage.left, 

             rImage.top, 

             m_csBitmaps[byIndex].dwWidth, 

             m_csBitmaps[byIndex].dwHeight, 

             hdcMem, 0, 0, SRCAND);



		::BitBlt(pDC->m_hDC, 

             rImage.left, 

             rImage.top, 

             m_csBitmaps[byIndex].dwWidth, 

             m_csBitmaps[byIndex].dwHeight, 

             hdcBmpMem, 0, 0, SRCPAINT);

	} // else



	::SelectObject(hdcMem, hbmT);

	::DeleteDC(hdcMem);



	::SelectObject(hdcBmpMem, hbmOldBmp);

	::DeleteDC(hdcBmpMem);

} // End of DrawTheBitmap

特此结贴~~~~~ ^^

nintendo_dskay 2009-12-08

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调整一下bmp灰度再贴上去按钮上吧

qq14923349 2009-12-08

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场景: 1.现在的软件上的按钮都不是标准的按钮了，因为基本上是贴图上去的，正常情况下一种图片，鼠标移上去之后按钮显示另一种效果，按下去之后又是另一种效果。 2.wx的做法其实和mfc的按钮原理是一样的，就是给按钮贴图和重绘背景。以下是源文件. dh_bitmap_button.h /* * File: dh_bitmap_button.h * Author: Sai * * Created on 2009年12月29日, 下午4:08 */ #ifndef _DH_BITMAP_BUTTON_H #define _DH_BITMAP_BUTTON_H #include "wx

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