I am new to using Visual C++. I used a Control box in the Resource view tab to create the progress bar in the dialog box. This puts all the information in one file. In another file, I want to update the same progress bar so that it looks like it is downloading. How do I do that I've tried everything I could think of which is not much since I am new to this and they don't work.
For example:
one file
Progress.cpp:
Member variable,m_pBar, is what I created for Progress Bar using the class wizard. It was automatically put in this file.
Update.Cpp
I want to update the progress bar in Progress.cpp so that it looks like I am downloading while I am sending information. How do I do that
Progress Bar assistance
Eugene Ostroukhov
In one file
StatisticView.cpp
void CStatisticView::DoDataExchange(CDataExchange* pDX) {
CHostLoaderDoc* pDoc = (CHostLoaderDoc*)m_pDocument;
m_ProgressBar.Format(_T("%.2f"),pDoc->loadTime);
CFormView::DoDataExchange(pDX);
DDX_Text(pDX, IDC_PROGRESSBAR1, m_ProgressBar); //created by visual C++
}
In the other file
UpdateBar.cpp
void CHostLoaderDoc::OnDeviceProgram() {
//Send some information across serial port. I want to update the progress bar here
//so that it lets me know that information is being transferred.
}
Sue Googe
See http://msdn2.microsoft.com/en-us/library/wkb2hwtk.aspx
It explains how to manipulate the progress bar using MFC. If you click on an individual function, you'll get to that function's reference where there's usually a sample code snippet that shows you exactly what's to be done.
nkojuharov
you can find about in www.codeproject.com
m_prog.SetRange(int), m_prog.GetPos(int),....
liquidweaver
Show some code snippets please - so that the problem can be identified.
jsiscoe
qqqqq
If you want your UI to be responsive during a complex time consuming operation, that should be put into a separate thread. Look up AfxBeginThread on MSDN.
WH Tan
Okay, your issue is that you need to access the progress bar member from your view class in your document class. It's not good design to modify an UI element from the document class. But in this specific case, you can get a handle to your view using GetFirstViewPosition and GetNextView.
You could also call UpdateAllViews and have the progress bar suitably updated in the view's OnUpdate override.
octav
timeshift
Furrukh Baig
Thanks, I will try the first one that you mentioned using:
GetFirstViewPosition and GetNextView in my OnDeviceProgram() function. If that doesn't work, I will look into threads.
sputnikinternet
The progress bar is moving much faster than the data is being sent. I want them to go at the same time. Here is what I have.
CStatisticView.cpp
void CStatisticView::OnUpdate(CView* pSender, LPARAM lHint, CObject* pHint)
{
// TODO: Add your specialized code here and/or call the base class
CHostLoaderDoc* pDoc = (CHostLoaderDoc*)m_pDocument;
// m_cProgBar.SetRange(0,(unsigned short) pDoc->loadTime);
m_cProgBar.SetPos(pDoc->loadTemp);
}
CHostloaderDoc.cpp
void CHostLoaderDoc::OnDeviceProgram() {
VARIANT vOut;
packet *curr = head;
unsigned char* ucArray;
CString ch;
SendCommand("L\r"); // First send the command (ASCII)
loadTemp =0;
CMSComm* pCommCtrl = &(((CMainFrame*)AfxGetMainWnd())->GetStatisticView()->m_Comm);
vOut.vt = VT_ARRAY|VT_UI1; // Set to array of binary mode for sending
vOut.parray = SafeArrayCreateVector(VT_UI1,0,70);// Create an array of 128 data + 6 misc bytes
ucArray=(unsigned char*)vOut.parray->pvData; // Cast the pointer to an array pointer
ucArray[0]=HEADER; // Head of package
ucArray[4]=0; // Meanwhile the package type will be data
while (curr->next) { // Move thru whole prepared package link list
do {
// Wait for receiving
} while (ch!=ACKNOWLEDGE); // Wait for acknowledge character
if(loadTemp <(unsigned short)loadTime)
{
loadTemp++;
loadTemp = loadTemp/2;
}
else
loadTemp = (unsigned short)loadTime;
UpdateAllViews(NULL);
}
}