Join our community for more solutions or to ask questions. share|improve this answer answered Dec 5 '10 at 23:46 Francois 19k23678 I guess, I've found a problem. Get 1:1 Help Now Advertise Here Enjoyed your answer? The following code demonstrates the use of variants and some of the automatic conversions performed when variants are mixed with other types: var V1, V2, V3, V4, V5: Variant; I: Integer; Check This Out
Only way bugs get to be fixed... –Francois Dec 6 '10 at 2:05 as you can see, thread was updated 1 hour ago... Contents 1 Variants Overview 2 Variant Type Conversions 3 Variants in Expressions 4 Variant Arrays 5 OleVariant 6 See Also Variants Overview Sometimes it is necessary to manipulate data whose type See Also Internal Presentation of Variant Types Delphi Data Types About Data Types (Delphi) Simple Types String Types (Delphi) Structured Types Pointers and Pointer Types (Delphi) Procedural Types Type Compatibility and AlexTZ Mar 4 2005, 02:17 PM As I said before Delphi6 must have two updates installed, in other case you'll get Invalid Variant Conversion errors when running some scripts.
Moreover, illicit operations on variants often result in run-time errors, where similar mistakes with regular variables would have been caught at compile time. By default, Variants can hold values of any type except records, sets, static arrays, files, classes, class references, and pointers. How to cope with too slow Wi-Fi at hotel?
GRFrones Mar 2 2005, 01:26 PM Making some tests and looking for COPY function on FastScript source, I think I found a bug...Try to convert the string '0012' to variant and The varTypeMask constant is a bit mask used to extract the code from VarType's return value, so that, for example, VarType(V) and varTypeMask = varDouble returns True if V contains a Special conversion rules apply to the System.TDateTime type declared in the System unit. Still get the error.
Is there any code in AfterEdit, etc.? You'll also learn various Java frameworks like Hibernate and Spring. Returns False if string is 'false' (noncase-sensitive) or a numeric string that evaluates to 0, True if string is 'true' or a nonzero numeric string; raises exception otherwise. Converts to string representation.
When an integer, real, or Boolean is converted to a System.TDateTime, it is first converted to a Double, then read as a date-time value. If this resolves the exception, I'll explain why. On 64-bit platforms, a variant is stored as a 24-byte record. Interbase: conversion error from string "BLOB" current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list.
Get 1:1 Help Now Advertise Here Enjoyed your answer? Register FAQ Community Calendar Today's Posts Search Community Links Members List Search Forums Show Threads Show Posts Tag Search Advanced Search Go to Page... declare them outside the main class –Focker Dec 6 '10 at 0:45 @Focker. always get error "Invalid variant type conversion".
Out-of-range assignments often result in the target variable getting the highest value in its range. his comment is here I haven't used Ado (I'll have anyway to move from BDE but I'm still thinking about) so I can't tell you exactly what can it do with MSSQL. (even if they're The scriptCODE var s: String; v: Variant;begin s := '0012'; v := s; s := v; ShowMessage(Copy(s, 1, 2));end.works well for me - prints 00. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed
Other standard routines that operate on variant arrays include VarArrayDimCount, VarArrayLowBound, VarArrayHighBound, VarArrayRef, VarArrayLock, and VarArrayUnlock. Steve 0 Write Comment First Name Please enter a first name Last Name Please enter a last name Email We will never share this with anyone. Using Delphi 2005 I am unable to insert a record into this database without getting an invalid variant type error. http://applecountry.net/delphi-error/delphi-error-loading-type-library-dll.php Lluis Turr Delphi Developer Wed, 18 Jun 1902 08:00:00 GMT Re:"Invalid variant conversion" error 'Invalid variant conversion' means just that, one of the types supported by variants can't be translated to
Personally, much as I'd like bugs in 2010 fixed, if I can work around them in a reasonable way I'd much rather they concentrated on improving the main line product (64 To check if updates was installed correctly, run Delphi and make File|New application and compile it. Cheers 0 Question by:styleress Facebook Twitter LinkedIn Google LVL 27 Best Solution bykretzschmar this would be the best choice: PickZoneDM.PickZoneQry.FieldByName('WWS_MAXLDVOL').Clear; Go to Solution 6 Comments LVL 44 Overall: Level 44
Yes No Log In Products Suites BEST VALUE Universal (includes all DevExpress .NET products in one integrated suite) DXperience (includes all DevExpress .NET Controls along with CodeRush) .NET Products INDIVIDUAL PLATFORMS MenuExperts Exchange Browse BackBrowse Topics Open Questions Open Projects Solutions Members Articles Videos Courses Contribute Products BackProducts Gigs Live Careers Vendor Services Groups Website Testing Store Headlines Ask a Question Ask No difference. If it is not, you haven't installed the updates correctly.
I hope this helps. OLE Automation, "Invalid Variant Conversion" 2. "Invalid variant type conversion" 3. "Invalid variant type conversion" 4. Quote> Hello everyone, > when I modify a field in my Delphi app: > with Table1 do > begin > Append; > navigate here Variants that contain strings cannot be indexed.
Covered by US Patent. Conversion error from string "0"? 8. The array can be indexed using V, V, and so forth, but it is not possible to pass a variant array element as a var parameter. as you could not understand, i wrote that problems were encountered BY GENERICS that are present in delphi2010.
Featured Post Training Course: Java/J2EE and SOA Promoted by Experts Exchange This course will cover both core and advanced Java concepts like Database connectivity, Threads, Exception Handling, Collections, JSP, Servlets, XMLHandling, than you can perform your function by type this code The Code (CODE) The Im… Delphi Embedded vs hosted images in email signatures Video by: Exclaimer To add imagery to Your Privacy - Legal Statements Copyright © 1998-2015 Developer Express Inc.All trademarks or registered trademarks are property of their respective owners GRFrones Mar 2 2005, 01:12 PM One more thing:CODE Var wI : Integer; wAux : String;begin wAux :=
AlexTZ Mar 1 2005, 10:55 AM D6 MUST have upd1 and upd2 installed. But in my case, with Unit growth code become unstable and coerce me to make some code-refactoring, just a little, but more than inconvenient... The empty record is posted when you call edit.