我使用了这个论坛的一段代码(附后),专门把数据库或者Grid的内容写到EXCEL文件,
可是有错误。依次出现的错误信息是:1."0x00403cca"指令引用的“0x17a77c0”内存,该内存不能为“read”。
要终止程序,请单击“确定”。
要调试程序,请单击“取消”
2."0x00403cca"指令引用的“0x1752cc4”内存,该内存不能为“read”。
要终止程序,请单击“确定”。
要调试程序,请单击“取消”3."0x0053577e"指令引用的“0x17a7900”内存,该内存不能为“read”。
要终止程序,请单击“确定”。
要调试程序,请单击“取消”
4."0x0043bd7d"指令引用的“0x17a7bec”内存,该内存不能为“read”。
要终止程序,请单击“确定”。
要调试程序,请单击“取消”5.Runtime error 216 at 0047209b6.终于关闭了这些东西了!
如果不执行这部分代码就不会出现这些错误。顺便再说点感受:用第三方控件(皮肤)或这类代码,很容易出现问题,是省力,但遇到问题也真闹心,
因为当时用皮肤控件时也出现问题,后来好容易找到毛病:在起始窗口(用完就free的那种)不能
用!否则就出错!
现在用这些代码又出现了错误,找了好长时间了,但未果。
主要是这些代码,没彻底看懂!哎~不知道该出多少大洋问此问题,如果不够再加吧!
解决方案 »
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- 征答
- 如何用代码控制光驱的缩进/弹出?
- http://community.csdn.net/Expert/topic/3188/3188778.xml?temp=.2998926
unit XLSFile;interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Grids,
Forms, Dialogs,db,dbctrls,comctrls;const
{BOF}
CBOF = $0009;
BIT_BIFF5 = $0800;
BOF_BIFF5 = CBOF or BIT_BIFF5;
{EOF}
BIFF_EOF = $000a;
{Document types}
DOCTYPE_XLS = $0010;
{Dimensions}
DIMENSIONS = $0000;type
TAtributCell = (acHidden,acLocked,acShaded,acBottomBorder,acTopBorder,
acRightBorder,acLeftBorder,acLeft,acCenter,acRight,acFill); TSetOfAtribut = set of TatributCell; TXLSWriter = class(Tobject)
private
fstream:TFileStream;
procedure WriteWord(w:word);
protected
procedure WriteBOF;
procedure WriteEOF;
procedure WriteDimension;
public
maxCols,maxRows:Word;
procedure CellWord(vCol,vRow:word;aValue:word;vAtribut:TSetOfAtribut=[]);
procedure CellDouble(vCol,vRow:word;aValue:double;vAtribut:TSetOfAtribut=[]);
procedure CellStr(vCol,vRow:word;aValue:String;vAtribut:TSetOfAtribut=[]);
procedure WriteField(vCol,vRow:word;Field:TField);
constructor create(vFileName:string);
destructor destroy;override;
end;procedure SetCellAtribut(value:TSetOfAtribut;var FAtribut:array of byte);
procedure DataSetToXLS(ds:TDataSet;fname:String);
procedure StringGridToXLS(grid:TStringGrid;fname:String);implementationuses globalUnit;procedure DataSetToXLS(ds:TDataSet;fname:String);
var c,r:Integer;
xls:TXLSWriter;
begin
xls:=TXLSWriter.create(fname);
if ds.FieldCount > xls.maxcols then
xls.maxcols:=ds.fieldcount+1;
try
xls.writeBOF;
xls.WriteDimension;
for c:=0 to ds.FieldCount-1 do
xls.Cellstr(0,c,ds.Fields[c].FieldName);
r:=1;
ds.first;
while (not ds.eof) and (r <= xls.maxrows) do begin Application.ProcessMessages;
if CanOut then
begin
// Tems:=; //format(R('T45'),[IntToStr(r)]);
//showmessage(Format(R('T45'),[r])); //'已经导出'+IntToStr(r)+'个记录.');
ShowMessage(Format(LG.Values['T45'],[r]));
break;
end; for c:=0 to ds.FieldCount-1 do
xls.WriteField(r,c,ds.Fields[c]);
inc(r);
ds.next;
end; //while ......
xls.writeEOF;
finally
xls.free;
end;
end;procedure StringGridToXLS(grid:TStringGrid;fname:String);
var c,r,rMax:Integer;
xls:TXLSWriter;
begin
xls:=TXLSWriter.create(fname);
rMax:=grid.RowCount;
if grid.ColCount > xls.maxcols then
xls.maxcols:=grid.ColCount+1;
if rMax > xls.maxrows then
rMax:=xls.maxrows;
try
xls.writeBOF;
xls.WriteDimension;
for c:=0 to grid.ColCount-1 do
for r:=0 to rMax-1 do
xls.Cellstr(r,c,grid.Cells[c,r]);
xls.writeEOF;
finally
xls.free;
end;
end;{ TXLSWriter }constructor TXLSWriter.create(vFileName:string);
begin
inherited create;
if FileExists(vFilename) then
fStream:=TFileStream.Create(vFilename,fmOpenWrite)
else
fStream:=TFileStream.Create(vFilename,fmCreate); maxCols:=100; //
maxRows:=65535; //
end;destructor TXLSWriter.destroy;
begin
if fStream <> nil then
fStream.free;
inherited;
end;procedure TXLSWriter.WriteBOF;
begin
Writeword(BOF_BIFF5);
Writeword(6); // count of bytes
Writeword(0);
Writeword(DOCTYPE_XLS);
Writeword(0);
end;procedure TXLSWriter.WriteDimension;
begin
Writeword(DIMENSIONS); // dimension OP Code
Writeword(8); // count of bytes
Writeword(0); // min cols
Writeword(maxRows); // max rows
Writeword(0); // min rowss
Writeword(maxcols); // max cols
end;
procedure TXLSWriter.CellDouble(vCol, vRow: word; aValue: double;
vAtribut: TSetOfAtribut);
var FAtribut:array [0..2] of byte;
begin
Writeword(3); // opcode for double
Writeword(15); // count of byte
Writeword(vCol);
Writeword(vRow);
SetCellAtribut(vAtribut,fAtribut);
fStream.Write(fAtribut,3);
fStream.Write(aValue,8);
end;procedure TXLSWriter.CellWord(vCol,vRow:word;aValue:word;vAtribut:TSetOfAtribut=[]);
var FAtribut:array [0..2] of byte;
begin
Writeword(2); // opcode for word
Writeword(9); // count of byte
Writeword(vCol);
Writeword(vRow);
SetCellAtribut(vAtribut,fAtribut);
fStream.Write(fAtribut,3);
Writeword(aValue);
end;procedure TXLSWriter.CellStr(vCol, vRow: word; aValue: String;
vAtribut: TSetOfAtribut);
var FAtribut:array [0..2] of byte;
slen:byte;
begin
Writeword(4); // opcode for string
slen:=length(avalue);
Writeword(slen+8); // count of byte
Writeword(vCol);
Writeword(vRow);
SetCellAtribut(vAtribut,fAtribut);
fStream.Write(fAtribut,3);
fStream.Write(slen,1);
fStream.Write(aValue[1],slen);
end;procedure SetCellAtribut(value:TSetOfAtribut;var FAtribut:array of byte);
var
i:integer;
begin
//reset
for i:=0 to High(FAtribut) do
FAtribut[i]:=0; {Byte Offset Bit Description Contents
0 7 Cell is not hidden 0b
Cell is hidden 1b
6 Cell is not locked 0b
Cell is locked 1b
5-0 Reserved, must be 0 000000b
1 7-6 Font number (4 possible)
5-0 Cell format code
2 7 Cell is not shaded 0b
Cell is shaded 1b
6 Cell has no bottom border 0b
Cell has a bottom border 1b
5 Cell has no top border 0b
Cell has a top border 1b
4 Cell has no right border 0b
Cell has a right border 1b
3 Cell has no left border 0b
Cell has a left border 1b
2-0 Cell alignment code
general 000b
left 001b
center 010b
right 011b
fill 100b
Multiplan default align. 111b
} // bit sequence 76543210 if acHidden in value then //byte 0 bit 7:
FAtribut[0] := FAtribut[0] + 128; if acLocked in value then //byte 0 bit 6:
FAtribut[0] := FAtribut[0] + 64 ; if acShaded in value then //byte 2 bit 7:
FAtribut[2] := FAtribut[2] + 128; if acBottomBorder in value then //byte 2 bit 6
FAtribut[2] := FAtribut[2] + 64 ; if acTopBorder in value then //byte 2 bit 5
FAtribut[2] := FAtribut[2] + 32; if acRightBorder in value then //byte 2 bit 4
FAtribut[2] := FAtribut[2] + 16; if acLeftBorder in value then //byte 2 bit 3
FAtribut[2] := FAtribut[2] + 8; if acLeft in value then //byte 2 bit 1
FAtribut[2] := FAtribut[2] + 1
else if acCenter in value then //byte 2 bit 1
FAtribut[2] := FAtribut[2] + 2
else if acRight in value then //byte 2, bit 0 dan bit 1
FAtribut[2] := FAtribut[2] + 3
else if acFill in value then //byte 2, bit 0
FAtribut[2] := FAtribut[2] + 4;
end;procedure TXLSWriter.WriteWord(w: word);
begin
fstream.Write(w,2);
end;procedure TXLSWriter.WriteEOF;
begin
Writeword(BIFF_EOF);
Writeword(0);
end;procedure TXLSWriter.WriteField(vCol, vRow: word; Field: TField);
begin
case field.DataType of
ftString,ftWideString,ftBoolean,ftDate,ftDateTime,ftTime:
Cellstr(vcol,vrow,field.asstring); ftAutoInc,ftSmallint,ftInteger,ftWord:
CellWord(vcol,vRow,field.AsInteger); ftFloat, ftBCD:
CellDouble(vcol,vrow,field.AsFloat);
else
Cellstr(vcol,vrow,EmptyStr);
end;
end;
end.
回复人: xfgncit98(xfgncit98) ( ) 信誉:99
回复人: chinaandys(剑风) ( ) 信誉:100 OLE方式我知道咋用,但是速度实在太慢!!如果超过一万条记录,就晕了!!!
它这种方式很快的。
谢谢你们~~~分不够再加100了,呵呵
uses ComObj;
{$R *.dfm}procedure TForm1.Button1Click(Sender: TObject);
var
MSExcel:Variant;
i,j:integer;
begin
SaveDialog1.Filter:='*.XLS|*.XLS';
SaveDialog1.DefaultExt:='XLS';
if SaveDialog1.Execute then
begin
MsExcel:=createOLEobject('excel.application');
MsExcel.workBooks.add;
Msexcel.visible:=false;
with DataSource1.Dataset do
begin
first;
for i:=0 to fieldcount-1 do
begin
Msexcel.cells[1,i+1].value:=fields[i].DisplayLabel ;
end;
j:=2;
while not eof do
begin
for i:=0 to fieldcount-1 do
begin
Msexcel.cells[j,i+1].numberformat:='@';
Msexcel.cells[j,i+1].value:=fields[i].AsString ;
end;
inc(j);
next;
end;
end;
MSExcel.ActiveWorkBook.SaveAs(SaveDialog1.FileName);
MSExcel.ActiveWorkBook.Saved:=True;
MSExcel.Quit;
end;
end;uses ComObj;
{$R *.dfm}procedure TForm1.Button1Click(Sender: TObject);
var
MSExcel:Variant;
i,j:integer;
begin
SaveDialog1.Filter:='*.XLS|*.XLS';
SaveDialog1.DefaultExt:='XLS';
if SaveDialog1.Execute then
begin
MsExcel:=createOLEobject('excel.application');
MsExcel.workBooks.add;
Msexcel.visible:=false;
with DataSource1.Dataset do
begin
first;
for i:=0 to fieldcount-1 do
begin
Msexcel.cells[1,i+1].value:=fields[i].DisplayLabel ;
end;
j:=2;
while not eof do
begin
for i:=0 to fieldcount-1 do
begin
Msexcel.cells[j,i+1].numberformat:='@';
Msexcel.cells[j,i+1].value:=fields[i].AsString ;
end;
inc(j);
next;
end;
end;
MSExcel.ActiveWorkBook.SaveAs(SaveDialog1.FileName);
MSExcel.ActiveWorkBook.Saved:=True;
MSExcel.Quit;
end;
end;uses ComObj;
{$R *.dfm}procedure TForm1.Button1Click(Sender: TObject);
var
MSExcel:Variant;
i,j:integer;
begin
SaveDialog1.Filter:='*.XLS|*.XLS';
SaveDialog1.DefaultExt:='XLS';
if SaveDialog1.Execute then
begin
MsExcel:=createOLEobject('excel.application');
MsExcel.workBooks.add;
Msexcel.visible:=false;
with DataSource1.Dataset do
begin
first;
for i:=0 to fieldcount-1 do
begin
Msexcel.cells[1,i+1].value:=fields[i].DisplayLabel ;
end;
j:=2;
while not eof do
begin
for i:=0 to fieldcount-1 do
begin
Msexcel.cells[j,i+1].numberformat:='@';
Msexcel.cells[j,i+1].value:=fields[i].AsString ;
end;
inc(j);
next;
end;
end;
MSExcel.ActiveWorkBook.SaveAs(SaveDialog1.FileName);
MSExcel.ActiveWorkBook.Saved:=True;
MSExcel.Quit;
end;
end;
谁有特稳定、好用的皮肤控件?