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FAQ

Drag&Drop

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ImageList ( Win32 ) (, ), , . , , , ImageList.

ImageList . ImageList ImageList. ( ), , .

, , , . , , \Program Files\Common Files\Borland Shared\Images\Buttons.

, . , , , , . , , . : Bitmap dimensions for are greater then imagelist dimensions. Separate into separate bitmaps? ( . ?). , . . . , , , .

. , , .., . , .

, , : . clNone.

 

, , , .. :

 

TreeView ( ) Win32 Windows 95/98/2000
Outline ( ) Win3.1 Windows 3.x
ListView ( Windows 95) Win32 Windows

 

TreeView Outline , . . TreeView , Outline. TreeView.

TreeView, , Items. Items TTreeNodes . Items->Item[int Index]. , TreeView1> Items>Item[0] 0 ( ). TTreeNodes, .

 

.

.

1. ( Windows), C++Builder 6, , TREEVIEW_1 .

2. TreeView1 Win32 .

3. TreeView1 ( ). Items . : . .

. , , .

. , .

.

. , , . . ,

-11

-12

. , . , , . ( , ), ImageList. Images TreeView. . -1 ( ), . - , . . , -, , ImageList, StateImages TreeView.

4. ImageList1 ImageList2. 14 , 7 .

5. TreeView1. Images ImageList1, StateImages ImageList2.

6. , 3 . , - 0. , 0, 1, 1, 2, 3, 2 ..

7. Button1 . Close();.

8. . .

 

. TTreeNodes.

 

:

 

Add(TTreeNode* Node, const System::AnsiString S) S , Node
AddFirst(TTreeNode* Node, const System::AnsiString S) S , Node. - 1
Insert(TTreeNode* Node, const System::AnsiString S) S Node -. 1
AddChild(TTreeNode* Node, const System::AnsiString S) S Node
AddChildFirst(TTreeNode* Node, const System::AnsiString S) S Node. - 1

 

. , , :

 

AddObject(TTreeNode* Node, const System::AnsiString S, void* Ptr) S Ptr , Node
AddObjectFirst(TTreeNode* Node, const System::AnsiString S, void* Ptr) S Ptr - , Node. - 1
InsertObject(TTreeNode* Node, const System::AnsiString S, void* Ptr) S Ptr Node . - 1
AddChildObject(TTreeNode* Node, const System::AnsiString S, void* Ptr) S - Ptr Node
AddChildObjectFirst(TTreeNode* Node, const System::AnsiString S, void* Ptr) S Ptr - Node. - 1

 

.

 

1. . TREEVIEW_2. TreeView1, Button1 ( ) Button2 ( ).

2. :

 

void __fastcall TForm1::Button1Click(TObject *Sender)

{

Close();

}

//---------------------------------------------------------------------------

 

void __fastcall TForm1::Button2Click(TObject *Sender)

{

TreeView1->Items->Clear();

TreeView1->Items->Add(NULL," ");

TreeView1->Items->AddChild(TreeView1->Items->Item[0],"");

TreeView1->Items->AddChild(TreeView1->Items->Item[0],"");

TreeView1->Items->Add(TreeView1->Items->Item[0]," ");

TreeView1->Items->AddChild(TreeView1->Items->Item[3],"");

TreeView1->Items->AddChild(TreeView1->Items->Item[1],"-11");

TreeView1->Items->AddChild(TreeView1->Items->Item[1],"-12");

}

 

3. . .

 

, , Text. , TreeView1->Items->Item[1]->Text ".

, , Data. , TreeView1->Items->Item[1]->Data.

: Clear(void), , Delete(TTreeNode* Node), Node -. , , .

, , . BeginUpdate ( ) EndUpdate ( ). , :

TreeView1->Items->BeginUpdate();

< >

TreeView1->Items->EndUpdate();

BeginUpdate , , E ndUpdate.

Count , , .. , .. Count 0, .

TreeView Selected. , . , , . , Selected NULL.

OnChanging ( ) OnChange . OnChanging TTreeNode* Node , , bool &AllowChange . AllowChange = false, . OnChange TTreeNode* Node . , .

TreeView . OnExpanding ( ) OnExpanded ( ). TTreeNode* Node . , OnExpanding bool &AllowExpansion, false, . OnCollapsing ( ) OnCollapsed ( ). , , , TTreeNode* Node , OnCollapsing bool &AllowCollapse, .

ReadOnly TreeView . , OnEditing OnEdited, ( OnEditing bool &AllowEdit ).

TreeView: ShowButtons, ShowLines, ShowRoot , , , , .

SortType . stNone, , . SortType stText, . Data ( SortType stData), Data ( SortType stBoth) .

OnCompare, TTreeNode*Node1 TTreeNode*Node2 , int &Compare, : , Node1 Node2, , , , Node1 Node2. , OnCompare :

OnCompare = -AnsiStrIComp(Node1->Text.c_str(),Node2->Text.c_str());

OnCompare SortType, stNone, (, ), SortType stNone. . SortType=stNone , OnCompare, .. , , . , SortType=stNone, SortType, stNone. OnCompare.

. , AlphaSort(void) SortType, OnCompare ( , AlphaSort ). AlphaSort SortType=stText , SortType=stText.

OnKeyDown OnKeyUp. OnKeyDown / OnKeyUp , , / , , , Shift, Alt Ctrl. , Sender, , , Key Shift. Key / . Shift , : ssShift, ssAlt, ssCtrl ( Shift, Alt, Ctrl ).

 

StatusBar ( Win32) , Windows. .

SimplePanel , . SimplePanel = true, , SimpleText. SimplePanel = false, , Panels. SizeGrip , .

TStatusPanels. , : Panels, StatusBar , Panels Editor. , . .

Text, . , . Width ().

Panels Items. , :

StatusBar1->Panels->Items[0]->Text= 1;

1 .

Count Panels. :

for(int i=0; i<StatusBar1->Panels->Count; i++)

{ StatusBar1->Panels->Items[i]->Text=;}

 

4. . StatusBar1, SimplePanel true. bool ShiftPressed OnChange, OnKeyDown, OnKeyUp:

 

void __fastcall TForm1::TreeView1Change(TObject *Sender, TTreeNode *Node)

{

String pn="",cn="";

TTreeNode*ParentNode=Node->Parent;

if(ParentNode) pn="..: "+ParentNode->Text;

TTreeNode*ChildNode=Node->getFirstChild();

if(ChildNode) cn="..:.."+ChildNode->Text;

Caption=pn+cn;

}

//---------------------------------------------------------------------------

 

void __fastcall TForm1::TreeView1KeyDown(TObject *Sender, WORD &Key,

TShiftState Shift)

{

TTreeNode*Node=TreeView1->Selected;

switch(Key)

{ case VK_DELETE:

if(Node)

{ StatusBar1->SimpleText=" : "+Node->Text;

Node->Delete();

} ShiftPressed=false; break;

case VK_INSERT:

if(Node)

{ StatusBar1->SimpleText=" : "+Node->Text;

TreeView1->Items->Insert(Node," ");

} ShiftPressed=false; break;

case VK_SHIFT:

ShiftPressed=true; return;

}

TreeView1->Update();

}

//---------------------------------------------------------------------------

 

void __fastcall TForm1::TreeView1KeyUp(TObject *Sender, WORD &Key,

TShiftState Shift)

{

ShiftPressed=false;

}

//---------------------------------------------------------------------------

 

5. , Insert Delete. .

 

( Drag&Drop), . , .

, , , TControl, C++Builder. .

DragMode, dmManual dmAutomatic. dmAutomatic () . dmManual () , . BeginDrag. , OnMouseDown, . - ( , ) BeginDrag.

. , , crNoDrop: . , , , DragCursor. crDrag, . , DragCursor , , .

, , . OnDragOver, , . , , , false Accept. true, .

Accept, OnDragOver, , . OnDragOver, , .

OnDragDrop . , . Source (-) X Y .

OnEndDrag, - . OnStartDrag, - . , .

 

.

6. DragMode TreeView1 dmAutomatic.

7. OnDragOver, OnDragDrop:

 

void __fastcall TForm1::TreeView1DragOver(TObject *Sender, TObject *Source,

int X, int Y, TDragState State, bool &Accept)

{

Accept=Source->ClassNameIs("TTreeView");

}

//---------------------------------------------------------------------------

 

void __fastcall TForm1::TreeView1DragDrop(TObject *Sender, TObject *Source,

int X, int Y)

{

if(TreeView1->Selected==NULL) return;

THitTests HT=TreeView1->GetHitTestInfoAt(X,Y);

TNodeAttachMode AttachMode;

TTreeNode*Node=TreeView1->GetNodeAt(X,Y);

if(HT.Contains(htOnItem)) AttachMode=naAddChild;

else if(HT.Contains(htNowhere)) AttachMode=naAdd;

else if(HT.Contains(htOnIndent)) AttachMode=naInsert;

else return;

if(ShiftPressed)

{ StatusBar1->SimpleText=" : "+ TreeView1->Selected->Text;

Node->Assign(TreeView1->Selected);

}

else

{ StatusBar1->SimpleText=" : "+ TreeView1->Selected->Text;

TreeView1->Selected->MoveTo(Node,AttachMode);

}

TreeView1->Update();

}

 

8. , , Shift.

 

ListView Windows , , . ViewStyle, . : vsIcon , vsSmallIcon , vsList , vsReport .

 

ListView .

1. , LISTVIEW .

2. ImageList1 ImageList2. 11 , 2 .

3. ListView1 Win32 .

4. , Items. , ListView.

5. :

-11

-12

-11

-12

-13,

0, 1, 6, - ( ) 0 1. Tab.

6. ListView1. LargeImages SmallImages ImageList1, StateImages ImageList2.

7. Columns vsReport. ListView1 Columns ( List). , , . , , . Caption , 1, 2, 3, ImageIndex , 7, 8, 9, 10 . MinWidth MaxWidth . . MaxWidth 300. Width.

8. ViewStyle: vsIcon , vsSmallIcon , vsList , vsReport . . .

 

ListView1 , , vsIcon vsSmallIcon .

 

9. MainMenu1. , ImageList, , .. , , .

10. MainMenu1 Items. , MainMenu Items . ( MIcon), ( MSmallIcon), ( MList), ( MReport). () Caption, Name . , , . , .

11. , , GroupIndex RadioItem true, .

12. OnDragOver, OnDragDrop ListView1:

 

void __fastcall TForm1::MIconClick(TObject *Sender)

{

ListView1->ViewStyle=vsIcon;

MIcon->Checked=true;

ListView1->DragMode=dmAutomatic;

}

//---------------------------------------------------------------------------

 

void __fastcall TForm1::MSmallIconClick(TObject *Sender)

{

ListView1->ViewStyle=vsSmallIcon;

MSmallIcon->Checked=true;

ListView1->DragMode=dmAutomatic;

}

//---------------------------------------------------------------------------

 

void __fastcall TForm1::MListClick(TObject *Sender)

{

ListView1->ViewStyle=vsList;

MList->Checked=true;

ListView1->DragMode=dmAutomatic;

}

//---------------------------------------------------------------------------

 

void __fastcall TForm1::MReportClick(TObject *Sender)

{

ListView1->ViewStyle=vsReport;

MReport->Checked=true;

ListView1->DragMode=dmAutomatic;

}

//---------------------------------------------------------------------------

 

void __fastcall TForm1::ListView1DragOver(TObject *Sender, TObject *Source,

int X, int Y, TDragState State, bool &Accept)

{

Accept=(Source=ListView1);

}

//---------------------------------------------------------------------------

 

void __fastcall TForm1::ListView1DragDrop(TObject *Sender, TObject *Source,

int X, int Y)

{

((TListView*)Sender)->Selected->Position=Point(X,Y);

}

 

13. . , ListView1 , , vsIcon vsSmallIcon .

14. Arrange:

void _fastcall Arrange(TListArrangement Code);

vsIcon vsSmallIcon. Code :

 

arAlignBottom
arAlignLeft
arAlignRight
arAlignTop
arDefault ( )
arSnapToGrid

 

:

ListView1->Arrange(arAlignTop);

, .

 

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