现vc 6.0中位图对话框类

// BitmapDialog.cpp : implementation file // // Created by David Forrester, January 1, 2001 // Feel free to use this code in any way you want. #include "stdafx.h" #include "BmpDlg.h" #include "BitmapDialog.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CBitmapDialog dialog //---------------------------------------------------------------- // CBitmapDialog :: CBitmapDialog - constructor for CBitmapDialog // // Parameters: // lpszTemplateName - the name of the dialog template resource // nIDTemplate - the ID of the dialog template resource // pParentWnd - the parent window // // You can leave any or all of the below NULL or 0 to not use it // lpszResourceName - the name of the bitmap resource to load // nIDResource - the ID of the bitmap resource to load // lpszFilename - the filename of the bitmap file to load // pBitmap - the bitmap to use (user is responsible for handling the bitmap) // The common constructor for CBitmapDialog void CBitmapDialog :: Constructor (LPCTSTR lpszResourceName, UINT nIDResource, LPCTSTR lpszFilename, CBitmap *pBitmap) { m_bTransparent = FALSE; // No transparency m_bStaticTransparent = TRUE; // Static controls are transparent m_bBitmapCreated = FALSE; // Don't automatically release the bitmap m_bBitmapExists = FALSE; // IS there a bitmap? m_bClickAnywhereMove = FALSE; // Clicking anywhere moves // Create a hollow brush used in making static controls transparent m_brushHollow = (HBRUSH) GetStockObject (HOLLOW_BRUSH); // Load a bitmap from a resource name if (lpszResourceName != NULL) { LoadBitmap (lpszResourceName, NULL); } // Load a bitmap from a resource ID else if (nIDResource != 0) { LoadBitmap (nIDResource); } // Use the passed bitmap else if (pBitmap != 0) { // NOTE: The user is responsible for handling the bitmap SetBitmap (pBitmap); } // else: No bitmap has been created yet } CBitmapDialog::CBitmapDialog (LPCTSTR lpszTemplateName, CWnd* pParentWnd, LPCTSTR lpszResourceName, UINT nIDResource, LPCTSTR lpszFilename, CBitmap *pBitmap) : CDialog (lpszTemplateName, pParentWnd) { Constructor (lpszResourceName, nIDResource, lpszFilename, pBitmap); } CBitmapDialog::CBitmapDialog (UINT nIDTemplate, CWnd* pParentWnd, LPCTSTR lpszResourceName, UINT nIDResource, LPCTSTR lpszFilename, CBitmap *pBitmap) : CDialog (nIDTemplate, pParentWnd) { Constructor (lpszResourceName, nIDResource, lpszFilename, pBitmap); } CBitmapDialog::CBitmapDialog (LPCTSTR lpszResourceName, UINT nIDResource, LPCTSTR lpszFilename, CBitmap *pBitmap) : CDialog () { Constructor (lpszResourceName, nIDResource, lpszFilename, pBitmap); } //---------------------------------------------------------------- // CBitmapDialog :: LoadBitmap - load a bitmap from a resource or file // // Parameters: // lpszResourceName - the name of the bitmap resource to load. // Set this to NULL if you use lpszFilename. // lpszFilename - the filename of the bitmap file to load. // Set this to NULL if you use lpszResourceName. // nIDResource - the ID of the bitmap resource to load BOOL CBitmapDialog :: LoadBitmap (LPCTSTR lpszResourceName, LPCTSTR lpszFilename) { // Release the bitmap if it was created ReleaseBitmap (); if (lpszResourceName != NULL) { // Load the bitmap from a resource m_bmBitmap = new CBitmap; if (!m_bmBitmap->LoadBitmap (lpszResourceName)) return FALSE; // Automatically delete the object m_bBitmapCreated = TRUE; m_bBitmapExists = TRUE; // Make the window transparent if needed MakeWindowRgn (); } else { // Load the bitmap from a file HBITMAP hbm = (HBITMAP) LoadImage (NULL, lpszFilename, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE|LR_CREATEDIBSECTION); if (hbm == NULL) return FALSE; // Get the CBitmap object CopyBitmapFrom (CBitmap::FromHandle(hbm)); //m_bmBitmap = CBitmap::FromHandle (hbm); } return TRUE; } BOOL CBitmapDialog :: LoadBitmap (UINT nIDResource) { // Release the bitmap if it was created ReleaseBitmap (); // Load the bitmap m_bmBitmap = new CBitmap; if (!m_bmBitmap->LoadBitmap (nIDResource)) return FALSE; // Automatically delete the object m_bBitmapCreated = TRUE; m_bBitmapExists = TRUE; // Make the window transparent if needed MakeWindowRgn (); return TRUE; } //---------------------------------------------------------------- // CBitmapDialog :: CopyBitmapFrom - sets the bitmap to a copy // of a CBitmap. // // Parameters: // pBitmap - a pointer to the bitmap to make a copy of and use. BOOL CBitmapDialog :: CopyBitmapFrom (CBitmap *pBitmap) { // Release the bitmap if it was created ReleaseBitmap (); // Get the bitmap information BITMAP bmSrc; pBitmap->GetBitmap (&bmSrc); // Get a DC to the source bitmap CDC dcSrc; dcSrc.CreateCompatibleDC (NULL); CBitmap *bmSrcOld = dcSrc.SelectObject (pBitmap); // Create a new bitmap m_bmBitmap = new CBitmap; if (!m_bmBitmap->CreateCompatibleBitmap (&dcSrc, bmSrc.bmWidth, bmSrc.bmHeight)) return FALSE; // Get a DC to the destination bitmap CDC dcDst; dcDst.CreateCompatibleDC (NULL); CBitmap *bmDstOld = dcDst.SelectObject (m_bmBitmap); // Copy the bitmap dcDst.BitBlt (0, 0, bmSrc.bmWidth, bmSrc.bmHeight, &dcSrc, 0, 0, SRCCOPY); // Release dcSrc.SelectObject (bmSrcOld); dcDst.SelectObject (bmDstOld); dcSrc.DeleteDC (); dcDst.DeleteDC (); // Automatically delete the object m_bBitmapCreated = TRUE; m_bBitmapExists = TRUE; // Make the window transparent if needed MakeWindowRgn (); return TRUE; } //---------------------------------------------------------------- // CBitmapDialog :: SetBitmap - sets the bitmap // // Parameters: // pBitmap - a pointer to the bitmap to use. // // NOTE: This function does not copy the bitmap. You are responsible // for handling the bitmap. Use CopyBitmapFrom() to copy a bitmap. void CBitmapDialog :: SetBitmap (CBitmap *pBitmap) { // Release the bitmap if it was created ReleaseBitmap (); // Set the bitmap m_bmBitmap = pBitmap; // The bitmap exists, but was not created m_bBitmapExists = TRUE; // Make the window transparent if needed MakeWindowRgn (); } //---------------------------------------------------------------- // CBitmapDialog :: ReleaseBitmap - releases a bitmap if it was // created using LoadBitmap or CopyBitmapFrom. void CBitmapDialog :: ReleaseBitmap () { // Make sure that the bitmap was created using LoadBitmap or CopyBitmapFrom if (m_bBitmapCreated) { // Delete the bitmap m_bmBitmap->DeleteObject (); delete m_bmBitmap; // The bitmap has not been created yet m_bBitmapCreated = FALSE; } m_bBitmapExists = FALSE; } //---------------------------------------------------------------- // CBitmapDialog :: SetTransparent - sets the dialog's transparent // state. void CBitmapDialog :: SetTransparent (BOOL bTransparent) { m_bTransparent = bTransparent; MakeWindowRgn (); } void CBitmapDialog :: SetTransColor (COLORREF col) { m_colTrans = col; MakeWindowRgn (); } //---------------------------------------------------------------- // CBitmapDialog :: MakeWindowRgn - makes a window region from // the bitmap and uses it if on transparent mode. void CBitmapDialog :: MakeWindowRgn () { if (!m_bTransparent) { // Set the window region to the full window CRect rc; GetWindowRect (rc); CRgn rgn; rgn.CreateRectRgn (0, 0, rc.Width(), rc.Height()); SetWindowRgn (rgn, TRUE); } else { // Set the region to the window rect minus the client rect CRect rcWnd; GetWindowRect (rcWnd); CRgn rgn; rgn.CreateRectRgn (rcWnd.l