D5升级到D6的问题(50分)

K

kehua

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2001-12-13

• #1

D5下编译通过的程序在D6下编译时出现如下错误:
Undeclared identifier:'TModalResult'
Undeclared identifier:'NULL'


Function SaveYesDlg:TModalResult;overload;
......
if TDBLookupCombobox(Temp).KeyValue<>Null then
什么原因?

 

D

dingbaosheng

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2001-12-13

• #2

改 Null 为 nil 试试看[^]

 

W

whf

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2001-12-13

• #3

use Variants

 

K

kehua

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2001-12-13

• #4

改NULL为nil后,错误信息变成Incompatible types

 

K

kehua

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2001-12-14

• #5

加上如下代码
var
const
NULL=''
编译时没有Undeclared identifier:'NULL'错误
出现了Undeclared identifier:'VarType'错误,VarType不是一个函数吗?

 

W

whf

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2001-12-14

• #6

老兄，use Variants,d6中有关Variant的定义都移到了Variants单元中了。

 

K

kehua

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2001-12-15

• #7

to whf
谢谢你的提醒,问题Undeclared identifier:'NULL'解决啦!
还有问题Undeclared identifier:'TModalResult'是怎么回事呢?

 

W

whf

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2001-12-15

• #8

试试use Controls