qi130

Hello,

Is there a way  to have a particular hint when mouse is over the tab (where the caption is) of a tabsheet?

Tabsheet component has a red colored property "customHint" in IDE, what is its purpose, how to use it?

Regards.

Hello,

I use to work with both Delphi XE5 and XE10 (Berlin) and after installing Next components, I can play with them.

I've recently installed Delphi Community Edition, how can I register Next components under this newly Delphi platform?

Should I uninstall first and reinstall the components ?

Could I "replay" the install process without uninstall ? (of course with the same V5 package)

Other way?

Thx.

Hello boki,

I can see that each TNxCustomColumn have a public "Display" property

property Display: TColumnDisplay read FDisplay;

Looking at TColumnDisplay, i see:

TColumnDisplay = class(TVirtualColElement)
...
   procedure DrawHintMark; virtual;

where TVirtualColElement have a public Canvas property

And this procedure ...

procedure TColumnDisplay.DrawHintMark;
begin
  with Canvas do
  begin
    Pen.Color := clRed;
    Brush.Color := clRed;
 	  Polygon([Point(ClientRect.Right - 5, ClientRect.Top),
    	Point(ClientRect.Right - 1, ClientRect.Top),
      Point(ClientRect.Right - 1, ClientRect.Top + 4)]);
  end;
end;

... is what I ask in a previous topic

I try to call it from my app at the end of Formcreate

NxCol_Colonne.Display.DrawHintMark;

giving an access violation.

I try in debug mode and I see that NxCol_Colonne.Display.canvas value is nil

Is there a way to fix it?
 

Hello !

I need to get the row number. Unfortunatly, the only parameter for the ButtonClick event manager is "Sender:TObject"

How to deal with the Sender to get the Arow value for the button?

Thx.

Hello !

In my app, I create columns in an empty grid depending on SQL definition of the queried fields

I.e char or varchar => textcolumn, numeric (int, float,...)=> Numbercolumn, etc.

GridResultat.Columns.Add(TNxNumberColumn,DC_Query.Fields.SqlName[j] );

=> the header caption is correctly set with Fields.SqlName 
 

I've found a bug in my app for Numbercolumn when trying to set cell content for a SQL null :

if DC_Query.Fields.IsNull[j] then
   GridResultat.Cell[j,i].AsString:='<null>'

=>

 

'<null>' is not a correct float value

Several topics in the forum refer to HideWhenEmpty and EmptyCaption properties, but I'm not able to access them in runtime

TNxNumberColumn(GridRequete.ColumnByName[DC_Query.Fields.SqlName[j]]).HideWhenEmpty:=true;

or

(GridRequete.ColumnByName[DC_Query.Fields.SqlName[j]] as TNxNumberColumn).Header.Caption    // in a MessageBox

both fire an access violation

What is the correct syntax to proceed?

Thx