通过API来操作ListView,插入数据的时候报冲突. - C++ Builder / Windows SDK/API
通过API来操作ListView,插入数据的时候报冲突.但是数据还是插进去了。
下面是全部的代码:::
//---------------------------------------
#include <vcl.h>
#pragma hdrstop

#include "Unit2.h"
//---------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm2 *Form2;
//---------------------------------------
__fastcall TForm2::TForm2(TComponent* Owner)
: TForm(Owner) {
}
//---------------------------------------
void ListViewInsertItemText(HWND hListView, const int iItem, const int iSubItem, char *pszText) {
LVITEM item;

item.mask = LVIF_TEXT;
item.iItem = iItem;
item.iSubItem = iSubItem;
item.state = 0;
item.stateMask = 0;
item.iImage = 0;
item.lParam = 0;
item.pszText = pszText;
item.cchTextMax = (int)strlen(pszText);

if (!iSubItem)
SendMessage(hListView, LVM_INSERTITEM, (WPARAM)0, (LPARAM)&item); //屏蔽掉这句就没有问题了
else
SendMessage(hListView, LVM_SETITEMTEXT, (WPARAM)iItem, (LPARAM)&item);
};

void ListViewSetExtStyle(HWND hListView, const DWORD dwStyle) {
DWORD style;

style = (dwStyle) ? dwStyle : LVS_EX_GRIDLINES|LVS_EX_FULLROWSELECT|LVS_EX_FLATSB;
SendMessage(hListView, LVM_SETEXTENDEDLISTVIEWSTYLE, 0, (LPARAM)style);
};

void ListViewInsertColumnText(HWND hListView, const short wIdx,
const int wFmt, char *pszText, const BOOL bFinal) {
LVCOLUMN column;
TEXTMETRIC text;
int nWidth;
HDC hDC = ::GetDC(Form2->Handle);
int fmt;

GetTextMetrics(hDC, &text);
nWidth = text.tmAveCharWidth*20;
ReleaseDC(Form2->Handle, hDC);

if (!wFmt)
fmt = LVCFMT_LEFT;
column.mask = LVCF_TEXT|LVCF_FMT|LVCF_WIDTH;
column.pszText = pszText;
column.fmt = fmt;

if (!bFinal)
column.cx = nWidth;
else
column.cx = nWidth + 100 ;

if (SendMessage(hListView, LVM_INSERTCOLUMN, wIdx, (LPARAM)(LPLVCOLUMN)&column) == -1) {
ShowMessage("1111111111111");
}
};

void __fastcall TForm2::FormCreate(TObject *Sender) {
HWND hListView1 = ListView1->Handle ;

ListViewSetExtStyle(hListView1, 0);

ListViewInsertColumnText(hListView1, 0, 0, "Field", 0);
ListViewInsertColumnText(hListView1, 1, 0, "Descritption", 1);
ListViewInsertItemText(hListView1, 0, 0, "你好啊");
ListViewInsertItemText(hListView1, 1, 0, "测试DIY!");

}
//---------------------------------------


[解决办法]
为什么要用ＡＰＩ呢？
[解决办法]
同上。