I googled about cellclick event in dataGridView for c++. All results are about c#.
My dataGridView1 selection mode is FullRowSelect. My target is when I clicked to any cell (row), detect that row and do something.
int i;
private: System::Void dataGridView1_CellDoubleClick(System::Object^ sender, System::Windows::Forms::DataGridViewCellEventArgs^ e)
{
if (double clicked row 1)
{
int = 1;
}
if (double clicked row 2)
{
int = 2;
}
}
I need any simple example or any source for learning. Thank you.
ok found a solution on c# tutorials and converted for c++-clr
if (e->RowIndex == 1) //that's what i looking for, you can use ColumnIndex too.
{
int = 1;
}
works perfect for c++-clr.
DataGridViewCell.RowIndex Property on msdn helps too.
Related
In my winform app ,
I want to use chart from toolbox (instead of making on using RDLC report).
But in Y axis I want to use expression like =Count((Fields!Number.Value)) but the chart won't allow me to as it simply takes names of he column.
I have tried searching in web but didn't find convincing result. So please share any link or share your knowledge so that I can learn
I also looked at coding options like chart2.Series[0].Points.AddXY(i, 0); but I have no idea how to enter expression in this.
Based on my search, It is hard for us to find a method to use expression directly.
However, I suggest that you can define a method to replace the expression, then you can add the correspond point when you want to use the expression.
Here is a code example you can refer to.
private void Form1_Load(object sender, EventArgs e)
{
chart1.Series.Clear();
var series1 = new System.Windows.Forms.DataVisualization.Charting.Series
{
Name = "Series1",
Color = System.Drawing.Color.Green,
IsVisibleInLegend = false,
IsXValueIndexed = true,
ChartType = SeriesChartType.Line
};
this.chart1.Series.Add(series1);
for (int i = 0; i < 1000; i++)
{
series1.Points.AddXY(i, Result(i));
}
chart1.Invalidate();
}
private int Result(int i)
{
var result = 20 * i + i * i;
return result;
}
Result:
I am writing a dialog based application which has one static control, one button and two edit controls. The static's type is class MyStatic : public CStatic which has an OnPaint() defined as follows:
void MyStatic::OnPaint()
{
CPaintDC dc(this);
int Row = pBGDlg->iRow; //pBGDlg is a pointer to the dialog
int Column = pBGDlg->iColumn; //iRow and iColumn are variables of the two edit controls
int RowHei = pBGDlg->iRowHei;
int ColumnWid = pBGDlg->iColumnWid;
if (bBuPressed)
{
for (int i = 0; i <= Row; ++i)
{
dc.MoveTo (0, i * RowHei);
dc.LineTo (Column * ColumnWid, i * RowHei);
}
}
Whenever the user input two integers and press the button, the application will draw corresponding lines on the static
void CProjDlg::OnClickedIdpreview()
{
UpdateData ();
mystatic.GetClientRect (&rtStatic); //mystatic is the name of the static
iRowHei = (rtStatic.Height () - 1) / iRow;
iColumnWid = (rtStatic.Width () - 1) / iColumn;
mystatic.bBuPressed = true;
Invalidate ();
UpdateWindow ();
}
For Example:Input 4 to the 1st edit control and then input 1 to the 1st edit control. However, if I substitute mystatic.InvalidateRect(&rtStatic); and mystatic.UpdateWindow(); for Invalidate(); and UpdateWindow(); respectively, the application fails to erase previous results. For example: Input 4 to the 1st edit control and then input 5 to the 1st edit control. I can not figure out why the second method fails. Could anyone explain for me? Thank you very much.
I was trying to create a treeview browser for my application but got stuck somewhere.
The treeview isn't getting displayed.
Code:
System::IO::DirectoryInfo^ info = gcnew System::IO::DirectoryInfo(path);
System::IO::Directory^ dir;
if (dir->Exists(path))
{
try
{
array<System::IO::DirectoryInfo^>^ dirs = info->GetDirectories();
if (dirs->Length > 0)
{
for (int i = 0; i < dirs->Length; i++)
{
TreeNode^ node = treeView1->Nodes[0]->Nodes->Add(dirs[i]->Name);
node->ImageIndex = 1;
for (int j = 0; j < dirs[i]->GetFiles()->Length; j++)
{
if (dirs[i]->GetFiles()[j]->Exists)
{
TreeNode^ nodes = treeView1->Nodes[0]->Nodes[node->Index]->Nodes->Add(dirs[i]->GetFiles()[j]->Name);
nodes->ImageIndex = 2;
}
}
}
}
}
catch (Exception^ e)
{
MessageBox::Show(e->Message);
}
}
Did you use splitcontainer and fill in the first section with your data first?
How did you initialize the new treeview class?
Example:
[ComVisibleAttribute(true)]
[ClassInterfaceAttribute(ClassInterfaceType::AutoDispatch)]
[DockingAttribute(DockingBehavior::Ask)]
public ref class TreeView : public Control
Then you can implement treeview and imageview.
For example, ShGetFolderLocation is one way to pull file locations, for windows OS.
Remember you have to populate the view and tell the system to display it for you to see it.
Or just go to: this earlier solution for the same issue
Follow up with the code for nodemouse click or whatever input response you are looking for such as expand or close, go to link and so on.
I want to create a wizard control from the pivot control. To achieve this I need to stop the pivot looping. I want to stop the pivot control moving forward from the last item to the first and backwards from the first to the last.
I'm pretty sure I should be able to intercept the manipulations e.g. cancel if I detect a right to left manipulation on the last pivot item. I can capture this in ManipulationDelta but don't know how to cancel the manipulation.
I have tried setting e.Handled = True but it didn't work.
I tried to set IsHitTestVisisble to false but this kills all manipulations. I tried setting it back to true in ManipulationCompleted but this then allows all manipulations.
Any ideas?
Cheers
Steve
The pivot is not designed to be used as a wizard and does not support stopping it's looping behaviour as this would create an inconsistent UX for users.
If you really must create a wizard do it with multiple pages.
Don't use a Pivot for a Wizard. Create your own transitions instead.
I couldn't reply to your comment on Matts answer but I just wanted to point you to this:
http://forty3degrees.wordpress.com/2011/07/19/creating-a-swipable-contentcontrol/
It's the last entry in my very neglected blog and should provide a good base for creating a wizard using a pivot style swipe.
Calum.
EDIT: I tried to do what you wanted with the pivot but couldn't find a way to stop it looping. The only way that I can think of to achieve this would be to derive a custom control from Pivot. Unfortunately SelectedIndex/SelectedItem are not virtual so you would need to hide them (with the new modifier) and reproduce the logic from the base class.
It's just an alternative solution I've posted here - you can try to make use of XNA framework TouchPanel and Touch.FrameReported Event:
using Microsoft.Xna.Framework.Input;
public MainPage()
{
InitializeComponent();
myPivot.IsHitTestVisible = false; // disable your Pivot
Touch.FrameReported += Touch_FrameReported;
TouchPanel.EnabledGestures = GestureType.HorizontalDrag;
}
TouchPoint first;
private void Touch_FrameReported(object sender, TouchFrameEventArgs e)
{
TouchPoint mainTouch = e.GetPrimaryTouchPoint(this);
if (mainTouch.Action == TouchAction.Down)
first = mainTouch;
else if (mainTouch.Action == TouchAction.Up && TouchPanel.IsGestureAvailable)
{
if (mainTouch.Position.X < first.Position.X)
{
if (myPivot.SelectedIndex < myPivot.Items.Count - 1)
myPivot.SelectedIndex++;
}
else if (mainTouch.Position.X > first.Position.X)
{
if (myPivot.SelectedIndex > 0)
myPivot.SelectedIndex--;
}
}
}
Thought it would probably work from WP7.1 as TouchPanel is available from that version of the OS.
If you absolutely want to keep the Pivot from looping, here is a quick and dirty hack:
int previousSelectedIndex = 0;
public PageWithPivot()
{
InitializeComponent();
pivot.SelectionChanged += new SelectionChangedEventHandler(pivot_SelectionChanged);
}
private void pivot_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (pivot.SelectedIndex == 0 && previousSelectedIndex == <number Of screens - 1>)
pivot.SelectedIndex = <number Of screens - 1>;
previousSelectedIndex = pivot.SelectedIndex;
}
This causes your PivotControl to jump back to the last pivotItem. Not very pretty but works.
This is so weird because it only works in the Emulator. I guess you shan't mess with the UI
You can use MVVM:
<phone:Pivot Foreground="Black"
Name="pivot1"
Title="AIDE"
SelectedIndex="{Binding SelectedItem, Mode=TwoWay}">
Cs:
private class HelpViewModel : ViewModelBase
{
public HelpViewModel()
{
}
private int _SelectedItem = 0;
public int SelectedItem
{
get
{
return _SelectedItem;
}
set
{
if (_SelectedItem != value)
{
if (value == 3)
_SelectedItem = 0;
else
_SelectedItem = value;
RaisePropertyChanged(() => SelectedItem);
}
}
}
}
public AppHelpPivot()
{
InitializeComponent();
LayoutRoot.DataContext = new HelpViewModel();
}
I am trying out the Historical Debugger in VS2010 Beta 1.
I have it turned on in the settings (at least I think I do), but when I try to examine objects the value is:
[Historical Data Has Not Been Collected]
Any Ideas how to get this to show the actual value?
Here is the code in question:
public partial class Form1 : Form
{
public Form1()
{InitializeComponent();}
private void button1_Click(object sender, EventArgs e)
{
int numer = Int32.Parse(txtNumerator.Text) ;
int denom = Int32.Parse(txtDemoninator.Text);
float answer = DivideValues(numer, denom);
txtAnswer.Text = answer.ToString();
}
private static float DivideValues(int numer, int denom)
{
float answer = numer / denom;
return answer;
}
}
To get it to work right you need to use the tree view in the Debug History Window. The navigation arrows in the gutter seem to be more of a distraction than a help as it lets you get to areas that are not recorded.
Also, local variables are not recorded. This is by design.