我要在ListView里面点击某个格子时候，显示一个ComboBox进行选择，请教各路高手

smxn 2003-10-17 10:13:04

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ccrun.com 2003-12-15

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怎么全是up的。楼主呢，也不吭一声。

liuliuisme 2003-12-15

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「已注销」 2003-12-15

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边学边用边创造 2003-12-12

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边学边用边创造 2003-12-12

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ccrun.com 2003-12-12

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仿季大侠的代码给你写了一份：

在Form上添加一个ListView和一个ComboBox，并适当添加些数据。

// .h file
//---------------------------------------------------------------------------
#ifndef Unit1H
#define Unit1H
//---------------------------------------------------------------------------
#include <Classes.hpp>
#include <Controls.hpp>
#include <StdCtrls.hpp>
#include <Forms.hpp>
#include <ComCtrls.hpp>
//---------------------------------------------------------------------------
class TForm1 : public TForm
{
__published: // IDE-managed Components
TListView *ListView1;
TComboBox *ComboBox1;
void __fastcall ListView1DblClick(TObject *Sender);
void __fastcall ComboBox1Exit(TObject *Sender);
private: // User declarations
int nCol;
TListItem *Item;
public: // User declarations
__fastcall TForm1(TComponent* Owner);
};
//---------------------------------------------------------------------------
extern PACKAGE TForm1 *Form1;
//---------------------------------------------------------------------------
#endif

// .cpp file
//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
ListView1->RowSelect = true;
ListView1->ViewStyle = vsReport;
ComboBox1->Visible = false;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::ListView1DblClick(TObject *Sender)
{
int nWidth, nHeight;
int nX, nY;
int nCount;
TRect Rect;
TPoint Pos;

Pos = ListView1->ScreenToClient(Mouse->CursorPos);
Item = ListView1->GetItemAt(Pos.x, Pos.y);
if (Item==NULL)
//没有点在Item上
return;
nCount = ListView1->Columns->Count;
nX = -GetScrollPos(ListView1->Handle, SB_HORZ);
for(nCol=0; nCol<nCount; nX+=nWidth, nCol++)
{
nWidth = ListView_GetColumnWidth(ListView1->Handle, nCol);
if (Pos.x <= nX + nWidth)
break;
}
if (nCol == nCount)
return;
if (nX < 0)
{
nWidth += nX;
nX = 0;
}

ComboBox1->Visible = true;
ActiveControl = ComboBox1;
Rect = Item->DisplayRect(drBounds);
Pos.x = nX;
Pos.y = Rect.Top;
MapWindowPoints(ListView1->Handle, Handle, (POINT*)&Pos, 1);
ComboBox1->SetBounds(Pos.x, Pos.y-1, nWidth, Rect.Height()+2);
ComboBox1->Text = nCol==0 ? Item->Caption : Item->SubItems->Strings[nCol-1];

}
//---------------------------------------------------------------------------
void __fastcall TForm1::ComboBox1Exit(TObject *Sender)
{
ComboBox1->Visible = false;
if (nCol == 0)
Item->Caption = ComboBox1->Text;
else
{
while(Item->SubItems->Count < nCol)
Item->SubItems->Add("");
Item->SubItems->Strings[nCol-1] = ComboBox1->Text;
}
}
//---------------------------------------------------------------------------

chifengwatch 2003-12-12