I want to display list items in a separate window. But when the window opens it doesn't display the list. I can click the list item but I cannot see it. If I click on data it appears one by one.Also, when I scroll down the list it displays the data.
I have tired using
m_bList_index.UpdateData(FALSE);
m_bList_index.UpdateWindow();
m_bList.UpdateData(FALSE);
m_bList.UpdateWindow();
at the last of the DisplayList() function, but that didn't resolve the issue. Below is the code which I want to edit.
CListBox m_bList_index;
CMyListBox m_bList;
BOOL CBatch::OnInitDialog()
{
CDialog::OnInitDialog();
m_status.Empty();
m_bIndex.Empty();
m_elapsed_time.Empty();
m_estimated_time.Empty();
CenterWindow();
m_bList.CreateColumn();
DisplayList();
return TRUE;
// return TRUE unless you set the focus to a control
}
void CBatch::DisplayList()
{
unsigned int size;
m_bList_title.ResetContent();
m_bList_title.SetHorizontalExtent(2000);
m_bList_title.InsertString(0, theApp.m_pFieldBTitleStr);
theApp.bCheckList->SetSortingType(theApp.checkList->GetSortingType());
theApp.bCheckList->Sort();
size = theApp.bCheckList->GetSize();
m_bList_index.SetRedraw(FALSE);
m_bList_index.ResetContent();
m_bList_index.SetHorizontalExtent(2000);
m_bList.SetRedraw(FALSE);
m_bList.DeleteAllItems();
m_bList.SetHorizontalExtent(2000);
char ColumnName[256];
char strColumnValue[256];
double fColumnValue;
for (unsigned int i = 0; i < size; i++)
{
char buffer[255];
int index = 0;
if(m_bList.m_SerialNo)
{
sprintf(buffer,"%d",i+1);
m_bList.InsertItem(i, buffer,0);
index = 0;
}
else
{
theApp.bCheckList->m_checkArray[i]->get((CV_CHECK_FIELD)(m_bList.ListColumns[0]),buffer);
m_bList.InsertItem(i, buffer,0);
index = 1;
}
for(; index < m_bList.NoofColumns; index++)
{
LV_COLUMN rightjust;
rightjust.mask = LVCF_FMT;
rightjust.fmt = LVCFMT_RIGHT;
m_bList.SetColumn(index+m_bList.m_SerialNo,&rightjust);
memset(buffer,0x0,256);
theApp.bCheckList->m_checkArray[i]->get((CV_CHECK_FIELD)(m_bList.ListColumns[index]),buffer);
if ( (m_bList.ListColumns[index] == CV_CHECK_FIELD_FILELOCATION) ||
(m_bList.ListColumns[index] == CV_CHECK_FIELD_POSTED_DATE) ||
(m_bList.ListColumns[index] == CV_CHECK_FIELD_STATUS))
strcpy(buffer, buffer);
}
m_bList.SetItemText(i,index+m_bList.m_SerialNo,buffer);
}
}
m_bList.SetSel(0, TRUE);
m_bList.SetRedraw(TRUE);
m_bList_index.SetRedraw(TRUE);
UpdateData(FALSE);
}
Related
I am making a music player program using MFC.
I would like to add a function to select multiple values in the listbox and delete them, but I would like to ask for advice.
The option of the listbox is Extended, and multiple selection using the control keys is fine.
Among the methods of listbox, it seems to be possible to use SetSel, GetCursel, GetSelItems, etc, but I can't solve it.
I would appreciate it if you could give me a simple advice.
Thank you very much.
void CMFC_MP3Dlg::DeleteList(CStatus* head)
{
CFileFind finder;
CString strTemp;
CString strRemoveFile;
POSITION pos;
CStatus* pTemp = new CStatus();
CStatus* pPrev = new CStatus();
//int nSelCount = m_ListBox.GetCurSel();
//m_ListBox.GetText(nSelCount, strTemp);
LPINT lpSelItems = new int[m_nListBoxCount];
m_ListBox.GetSelItems(m_nListBoxCount, lpSelItems);
for (int nCount = 0; nCount <= m_nListBoxCount; nCount ++)
{
if(m_ListBox.SetSel(nCount,1))
{
m_ListBox.GetText(nCount, strTemp);
m_vec.push_back(strTemp);
}
}
std::vector<CString>::iterator iter;
for(iter = m_vec.begin(); iter != m_vec.end();)
{
strRemoveFile.Format(_T("C:\\MFC_MP3\\%s"), *iter);
BOOL bRet = finder.FindFile(strRemoveFile);
if(bRet)
{
if(DeleteFile(strRemoveFile))
{
pPrev = NULL;
pTemp = head;
if(pTemp == NULL)
{
return;
}
while(pTemp->m_strFileName != strTemp)
{
pPrev = pTemp;
pTemp = pTemp->m_right;
}
if(pTemp->m_strFileName == strTemp)
{
pPrev->m_right = pTemp->m_right;
pTemp->m_right->m_left = pPrev;
delete pTemp;
}
MessageBox(_T("삭제 성공!"));
ShowList();
}
else
{
MessageBox(_T("삭제 실패!"));
}
}
else
{
MessageBox(_T("File Not Found!"));
}
iter++;
}
}
Does this help?
void CChristianLifeMinistryPersonalCopiesDlg::BuildSelectedArray()
{
int i, iSize, *pIndex;
CString strText;
m_aryStrPublishers.RemoveAll();
// get selected count
iSize = m_lbPublishers.GetSelCount();
if (iSize > 0)
{
pIndex = new int[iSize];
m_lbPublishers.GetSelItems(iSize, pIndex);
for (i = 0; i < iSize; i++)
{
m_lbPublishers.GetText(pIndex[i], strText);
m_aryStrPublishers.Add(strText);
}
delete[] pIndex;
}
}
This works fine for me.
Note that your code is incomplete though. We don't see you specify what the count is of the selected items. And we don't see you reset your vector array before you begin.
Have you actually debugged your code to see where it fails?
Constructor:
ScrollArea::ScrollArea(...)
{
...
end = myItems.count();
for(int i=0; i<end; i++)
{
scrollItems.append(new ScrollItem(myItems.at(i), 0, width, i, this));
}
scrollArea->setWidget(this); //must be last for auto-scrolling to work
}
Member function:
void ScrollArea::updateSelection(int selection)
{
foreach(ScrollItem* item, scrollItems)
{
if(item->updateSelection(selection, 0))
{
scrollArea->ensureWidgetVisible(item);
}
}
}
After running ScrollArea::updateSelection, it looks like this:
I want it to look like this:
Google returns a mis-titled question (as far as I can tell: Place widget in center of QScrollArea) and a bunch of junk.
Still don't know why QScrollArea::ensureWidgetVisible doesn't work, even with explicit margins, but I found something that does:
void ScrollArea::updateSelection(int selection)
{
int item = -1;
int i = scrollItems.count();
while(i)
{
i--;
if(scrollItems.at(i)->updateSelection(selection, 0))
{
item = i;
}
}
if(item < 0)
{
return;
}
i = scrollItems.first()->height();
item *= i;
item += i / 2;
//item is now the position that should be centered
scrollArea->verticalScrollBar()->setValue(
item - (scrollArea->height() / 2)
);
}
So I'm basically brute-forcing what I want instead of having the library do it. (and fail)
Ok, I added the following code to a mod menu for a game and everything works fine for me in Windows 7. But when I send it to my friend on Windows 8, he tries to select a button (which calls the GetClients() function) and the game just crashes. Any idea why?
char* playerNames[31] = {};
int getUID(char* pName)
{
int i = 0;
while (i < 31) {
char* pNamesec = (char*)PLAYER::GET_PLAYER_NAME((Player)(i));
if (pNamesec == pName) {
return i;
}
//else { break; }
i++;
}
}
char* getPnameAt(int id) {
for (int i = 0; i < 30; i++) {
if (i == id) {
return (char*)PLAYER::GET_PLAYER_NAME((Player)(i));
}
}
}
void GetClients()
{
playerNames[31] = {};
int i = 0;
while (i < 100) {
char* pName = (char*)PLAYER::GET_PLAYER_NAME((Player)(i));
if (wcslen((WCHAR*)pName) > 3) {
if (getUID(pName) == i) {
playerNames[i] = pName;
} else {
getPnameAt(i);
}
}
i++;
}
i = 0;
}
Error message that pops up says:
CORE: An exception occurred while executing modmenu.asi, press ok to continue
You have created an array of length 31. So you can access array playerName from index 0 to index 30. In GetClients()
playerNames[31] = {}; //Observe this line
while (i < 100) {
// Indexes greater than 30 are being used to access playerNames array
}
31 or beyond is not a valid index for playerNames array and you are getting undefined behavior.
So if you want to add in playerNames in runtime. Below is the small example that might help you..
int main()
{
vector<string> playerNames;
playerNames.push_back("XYZ");
playerNames.push_back("ABC");
// To access from vector
vector<string>::iterator itr = vec.begin();
for(;itr!=vec.end();itr++)
{
cout<<*itr<<endl;
}
}
Read more here
Every time i use IsertColumn function it will return an int variable. That variable is a index of a column.
If we have a lot of columns, is there any way to get that index of a column with given name (header text of that column).
Thank you
Per your request, something similar to this should work....
This example derives a CListCtrl to be used within a dialog.
int MyListCtrl::FindColumn(const CString& ColumnText)
{
int index = -1;
CHeaderCtrl* pHeader = GetHeaderCtrl();
if (pHeader)
{
int NumberOfColumns = pHeader->GetItemCount();
for (int i = 0; i < NumberOfColumns; ++i)
{
HDITEM Item;
TCHAR buffer[256] = { 0 };
Item.mask = HDI_TEXT;
Item.pszText = buffer;
Item.cchTextMax = 256;
pHeader->GetItem(i, &Item);
if (Item.pszText == ColumnText)
{
index = i;
break;
}
}
}
return index;
}
To call the function:
int index = m_llistctrl.FindColumn(_T("Value"));
Where "Value" is the text of an actual column in the header.
CListCtrl::GetHeaderCtrl::GetItem(int iPos, HDITEM* pHeaderItem);
HDITEM::pszText is what you want - if I got your question correctly...
I am doing a small project of drawing tool.
When button down, capture the start point. When mouse move, draw a line. When button up, capture the final point. I use line to draw a polygon, so I use array m_polygonx to store final point.x of a line, and m_polygony to store final point.y, uint m_count to count the numbers of final points.
Here is my code:
void CDrawToolView::OnLButtonUp(UINT nFlags, CPoint point)
{
m_startRect=FALSE;
::ClipCursor(NULL);
dc.MoveTo(m_startPoint);
dc.LineTo(m_OldPoint);
dc.MoveTo(m_startPoint);
dc.LineTo(point);
m_count++;
m_polygonx[m_count] = point.x;
m_polygony[m_count] = point.y;
}
And then I pass the array to a dialog.
In my calling function:
void CDrawToolView::OnEditProperty()
{
CPropertyDlg dlg;
dlg.origin_x = m_startPoint.x;
dlg.origin_y = m_startPoint.y;
dlg.count = m_count;
for (int i=0; i < m_count ; i++)
{
dlg.polygonx[i] = m_polygonx[i];
dlg.polygony[i] = m_polygony[i];
}
if (dlg.DoModal() == IDOK)
{
m_startPoint.x = dlg.origin_x;
m_startPoint.y = dlg.origin_y;
m_count = dlg.count;
for (int i=0; i < dlg.count ; i++)
{
m_polygonx[i] = dlg.polygonx[i];
m_polygony[i] = dlg.polygony[i];
}
}
}
But the array does not stored and passed successfully. Could some one help me?