Passing a class pointer as a function argument-CodePudding

Currently I am trying to create a function to implement modularization in the code like below.

[Code 1]

float CBitmapWaterMark::DrawPrintInfoText(HDC hDC)
{
    StringFormat* stringFormat = new StringFormat();   
    // I'm trying to pass a stringFormat object to a member function of a class(CBitmapWaterMark). 
    stringFormat->SetAlignment(StringAlignmentNear);
    stringFormat->SetLineAlignment(StringAlignmentNear);
 

    TestFunction(stringFormat) //help point 1
}

VOID CBitmapWaterMark::TestFunction(StringFormat* stringFormat) // help point 2
{
    // implement 
}

=> Syntax Error identifier StringFormat

But I don't know how to pass it as a function argument and how to receive it.

There seems to be a problem with StringFormat which is declared in <gdiplusstringformat.h>.

This is a minimal complete reproducible example:

#include <windows.h>
#include <gdiplus.h>
#include <gdiplusstringformat.h>

StringFormat fmt;

Error log:

1>C:\Project3 C  \main.cpp(5,17): error C4430: missing type specifier - int assumed. Note: C   does not support default-int
1>C:\Project3 C  \main.cpp(5,14): error C2146: syntax error: missing ';' before identifier 'fmt'

CodePudding user response：

You'll need a using Gdiplus::StringFormat. The name "StringFormat" is fairly generic, so C has namespaces to prevent name collisions between 2 libraries. GDI puts its names in namespace Gdiplus.