在Delphi中,“invalid variant operation”错误通常与Variant类型的使用有关。以下是对该错误的详细解答: 1. “invalid variant operation”错误的具体含义 “invalid variant operation”错误意味着你尝试对一个Variant类型的变量执行了一个不合法或不支持的操作。这通常发生在Variant变量未初始化、包含的数据类型与你尝试...
221 Invalid variant operation EVariantError 222 No variant method call dispatcher EVariantError 223 Cannot create variant array EVariantError 224 Variant does not contain array EVariantError 225 Variant array bounds error EVariantError 226 TLS initialization error No exception to map to. 227 Assertion...
EInvalidGridOperation = class(Exception) 非法的网格操作。原因:试图引用一个不存在的网格单元。定义于 Grids 单元 EStringSparseListError = class(Exception) --- EVariantError = class(Exception) 对 Variant 变量的操作失败 EPropReadOnly = class(Exception) 非法写一个只读属性 EPropWriteOnly = class(Exce...
on E: EInvalidOperation do MessageDlg('Ignoring Exception:'+E.Message, mtInformation,[mbOK],0); end; end; 12.3.2 提供缺省响应 在异常响应模块中,一般我们只对希望响应的特定异常进行处理。如果一个异常发生而响应模块并没有包含对它的处理代码,则退出当前响应模块,异常类仍被保留。 为了保证任何异常发生...
Overflow in conversion or arithmetic operation 转换或算术操作溢出 Overriding automated virtual method <name> cannot specify a dispid 覆盖的自动虚拟方法<NAME>不能指定DISPID ghmbright 核心吧友 7 PACKED not allowed here 这里不允许PACKED Pointer type required 需要指针类型 Procedure cannot have a result...
Overflow in conversion or arithmetic operation 转换或算术操作溢出 Overriding automated virtual method <name> cannot specify a dispid 覆盖的自动虚拟方法<NAME>不能指定DISPID PACKED not allowed here 这里不允许PACKED Pointer type required 需要指针类型 Procedure cannot have a result type 过程不能有结果类型...
Exception class EVariantTypeCastError with message 'Could not convert variant of type (Null) into type (Integer)' DPH.18: Exception class EOleException with message 'Application uses a value of the wrong type for the current operation'. DPH.19: E2029 Statement expected but 'TYPE' found ...
Delphi的中文错误提示(1) ';'notallowedbefore'ELSE'ElSE前不允许有“;” ''clausenotallowedinOLEautomationsection在OLE自动区段不允许“”子句 ''isnotatypeidentifier不是类型标识符 ''notpreviouslydeclaredasaPROPERTY前面没有说明PROPERTY 'GOTO'leadsintooroutofTRYstatementGOTO进入或超出TRY语句的范围 c...
MemoryreferenceexpectedMethod<name>hidesvirtualmethodofbasetype<name>Method<name>notfoundinbaseclassMethodidentifierexpectedMissingENDIFdirectiveMissingoperatororsemicolonMissingorinvalidconditionalsymbolin$<symbol>directiveMissingparametertypeNecessarylibraryhelperfunctionwaseliminatedbylinkerNodefinitionforabstractmethod<name>...
operation 转换或算术操作溢出 Overriding automated virtual method cannot specify a dispid 覆盖的自动虚拟方法不能指定DISPID PACKED not allowed here 这里不允许PACKED Pointer type required 需要指针类型 Procedure cannot have a result type 过程不能有结果类型 Procedure DISPOSE needs destructor 过程DISPOSE需要...