我想使用MFC应用程序显示位图图像。 我正在使用浏览按钮来选择正常工作的文件。但是,当我尝试通过双击文件加载图像时,应用程序启动,但图像不显示。使用mfc对话框显示.bmp图像时出错
这里是我的代码浏览按钮和功能打开双击图像。
void COpenImageDlg::OnBnClickedButton1()
{
// TODO: Add your control notification handler code here
CString path;
CFileDialog dlg(TRUE);
int result=dlg.DoModal();
if(result==IDOK)
{
path=dlg.GetPathName();
UpdateData(FALSE);
}
HBITMAP hBmp = (HBITMAP)::LoadImage(NULL, path, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE|LR_CREATEDIBSECTION);
CBitmap bmp;
bmp.Attach(hBmp);
CClientDC dc(this);
CDC bmDC;
bmDC.CreateCompatibleDC(&dc);
CBitmap *pOldbmp = bmDC.SelectObject(&bmp);
BITMAP bi;
bmp.GetBitmap(&bi);
dc.BitBlt(0,0,bi.bmWidth,bi.bmHeight,&bmDC,0,0,SRCCOPY);
bmDC.SelectObject(pOldbmp);
}
void COpenImageDlg::OpenImage1(CString path)
{
//CString path;
CFileDialog dlg(TRUE);
int result=dlg.DoModal();
if(result==IDOK)
{
path=dlg.GetPathName();
UpdateData(FALSE);
}
HBITMAP hBmp = (HBITMAP)::LoadImage(NULL, path, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE|LR_CREATEDIBSECTION);
CBitmap bmp;
bmp.Attach(hBmp);
CClientDC dc(this);
CDC bmDC;
bmDC.CreateCompatibleDC(&dc);
CBitmap *pOldbmp = bmDC.SelectObject(&bmp);
BITMAP bi;
bmp.GetBitmap(&bi);
dc.BitBlt(0,0,bi.bmWidth,bi.bmHeight,&bmDC,0,0,SRCCOPY);
}
初始化类:
`BOOL COpenImageApp :: InitInstance中(){ // INITCOMMONCONTROLSEX()需要在Windows XP中,如果一个应用程序 清单指定要//使用COMCTL32.DLL版本6或更高版本启用 //视觉样式。否则,任何窗口创建都将失败。
INITCOMMONCONTROLSEX InitCtrls;
InitCtrls.dwSize = sizeof(InitCtrls);
// Set this to include all the common control classes you want to use
// in your application.
InitCtrls.dwICC = ICC_WIN95_CLASSES;
InitCommonControlsEx(&InitCtrls);
CWinApp::InitInstance();
AfxEnableControlContainer();
// Create the shell manager, in case the dialog contains
// any shell tree view or shell list view controls.
CShellManager *pShellManager = new CShellManager;
// Standard initialization
// If you are not using these features and wish to reduce the size
// of your final executable, you should remove from the following
// the specific initialization routines you do not need
// Change the registry key under which our settings are stored
// TODO: You should modify this string to be something appropriate
// such as the name of your company or organization
SetRegistryKey(_T("Local AppWizard-Generated Applications"));
COpenImageDlg dlg;
m_pMainWnd = &dlg;
INT_PTR nResponse = dlg.DoModal();
char* buff;
char* command_line = GetCommandLine();
buff = strchr(command_line, ' ');
buff++;
buff = strchr(buff, ' ');
buff++;
buff = strchr(buff, ' ');
buff++;
if (buff != NULL)
{
HBITMAP hBmp = (HBITMAP)::LoadImage(NULL, "C:\Users\Raguvaran\Desktop\tiger.bmp", IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE|LR_CREATEDIBSECTION);
CBitmap bmp;
bmp.Attach(hBmp);
dlg.RedrawWindow();
CClientDC dc(m_pMainWnd);
CDC bmDC;
bmDC.CreateCompatibleDC(&dc);
CBitmap *pOldbmp = bmDC.SelectObject(&bmp);
BITMAP bi;
bmp.GetBitmap(&bi);
dc.BitBlt(0,0,bi.bmWidth,bi.bmHeight,&bmDC,0,0,SRCCOPY);
}
//RedrawWindow(dlg, NULL, NULL, RDW_INVALIDATE);
//UpdateWindow(dlg);
if (nResponse == IDOK)
{
// TODO: Place code here to handle when the dialog is
// dismissed with OK
}
else if (nResponse == IDCANCEL)
{
// TODO: Place code here to handle when the dialog is
// dismissed with Cancel
}
// Delete the shell manager created above.
if (pShellManager != NULL)
{
delete pShellManager;
}
// Since the dialog has been closed, return FALSE so that we exit the
// application, rather than start the application's message pump.
return FALSE;
}`
我用于浏览按钮相同的代码,并显示图像。但是,当我双击文件时,图像不显示。请告诉我我做错了什么。
我明白你的观点。 我添加了这段代码来获取路径。 \t'char * buff; \t char * command_line = GetCommandLine(); \t \t \t buff = strchr(command_line,''); \t buff ++; \t \t if(buff!= NULL) \t { \t \t dlg.OpenImage1(buff); \t \t \t}' – Khushboo
我得到正确的路径。但静止图像不显示。 – Khushboo
@Khushboo所以,当你调试到这个功能,你有没有得到完全相同的文件名,当你浏览?请记住,命令行中的第一个参数是应用程序名称本身。 –