The signature of functions, which expect a string by value, isn't changed any more. Before,Delphi2Cpphad changed the code to pass a constant reference of the string instead. This is more efficient in C++, since it avoids copying the character array, but a manual post-processing of the co...
Delphi declares arrays as therangeof elements, so the same declaration would be MyType = Array [0..3] of DWord; Method 2: Alternatively, the number of elements may be specified by a constant, e.g #define NumberOfElements 5 //...typedef struct _MyRec { DWORD MyArray[NumberOfElements]...
MVCNamedSQLQuery allows to define a "named query" which is, well, a SQL query with a name. Then such query can be used by the method SelectByNamedQuery<T> or SelectByNamedQuery. Moreover in the attribute it is possible to define on which backend engine that query is usable. In this...
在Delphi中,定义其他单元的类型可以通过创建一个新的单元文件来实现。以下是一个简单的步骤来创建一个新的单元文件,并在其中定义一个类型: 1. 打开Delphi IDE,并创建一个新的单元文件。在...
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 Double or an array of Double. (The mask simply hides the first bit, which indicates whether the ...
VType contains the type code of the variant in the lower 12 bits (the bits defined by the varTypeMask = $FFF constant). In addition, the varArray = $2000 bit may be set to indicate that the variant is an array, and the varByRef (= $4000) bit may be set to indicate that the ...
program LoopThroughArray;const // We declare a constant called arr. It is an array of 3 elements // Then we initialize the elements with 3 float values (1, 1.1 and 1.2) arr : array[1..3] of real = ( 1, 1.1, 1.2 ); var R: real;begin...
Declare the conditional define 'GDIP_0110' (Project Options | Delphi Compiler | Conditional defines). This way, you don't accidentally use GDI+ 1.1 functionality in an application that must run on older versions of Windows. Disable runtime themes (Project Options | Application, uncheck 'Enable...
Generally, it can be proven that for N-bit division there exists (N+1) bit multiplication constant – for the details see the key article Division by Invariant Integers using Multiplication. The rest of the post is a review of the results obtained in the article cited. I will use 32-bit...
An Array of Records Since TMember acts like any other Object Pascal type, we can declare an array of record variables: Note: Here's how todeclare and initialize a constant array of records in Delphi. Records as Record Fields Since a record type is legitimate as any other Delphi type, we...