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Re: Problem with Drag&Drop in ArrayCtrl [message #22556 is a reply to message #22552]

Sun, 26 July 2009 23:50

koldo
Messages: 3437
Registered: August 2008

Senior Veteran

luzr wrote on Sun, 26 July 2009 17:28

koldo wrote on Sat, 18 July 2009 07:51

More simple:

Is it possible to update/refresh only one row in an ArrayCtrl ?

Best regards
Koldo

void ArrayCtrl::RefreshRow(int i);

Hello Mirek

Unfortunately RefreshRow() does not repaint the row.

To force the repaint I have to scroll up and down and then I see the row repainted.

Using instead UpdateRefresh() repaints the rows properly, but it seems it cancels the Drag & Drop possibility.

It is difficult to prepare a sample case as the application is rather big. Here I put some details:

The variable is declared under the TopWindow class as

ArrayCtrl filesList;

The layout is in:

	filesList.AddColumn("Thumbnail").SetDisplay(Single<DisplayThumbnail>()).HeaderTab().Min(50);
	filesList.AddColumn("Properties").HeaderTab().Min(50);
	filesList.MultiSelect().HeaderObject().Absolute().Clipboard();
	filesList.HeaderTab(0).SetRatio(10);
	filesList.ColumnWidths("100 100");
	filesList.WhenDropInsert = 	THISBACK(DropInsertFilelist);
	filesList.WhenDrag = 		THISBACK(DragFilelist);
	filesList.WhenDrop = 		THISBACK(DropFilelist);

DisplayThumbnail declaration:

struct DisplayThumbnail : public Display {
    virtual void Paint(Draw& w, const Rect& r, const Value& val, Color ink, Color paper, dword style) const; 
};

And Drag & Drop functions

	void DropFilelist(PasteClip& d)
	{
		if(AcceptText(d)) {
			filesList.Add(GetString(d), GetString(d));
			filesList.SetFocus();
		}
	}
	void DropInsertFilelist(int line, PasteClip& d)
	{
		if(AcceptInternal<ArrayCtrl>(d, "array")) {
			filesList.InsertDrop(line, d);
			filesList.SetFocus();
			filesList.SetLineCy(70);
		}
	}
	void DragFilelist()
	{
		filesList.DoDragAndDrop(InternalClip(filesList, "array"));
	}

Best regards
Koldo

Best regards
Iñaki

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