I need help - I can help - passing CString arguments to dll functions

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passing CString arguments to dll functions

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Category: For Users of the Library
Forum Name: I need help - I can help
Forum Description: Problems and solutions while programming with the Debenu Quick PDF Library and Debenu PDF Viewer SDK
URL: http://www.quickpdf.org/forum/forum_posts.asp?TID=2824
Printed Date: 15 Jul 25 at 12:35AM
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Topic: passing CString arguments to dll functions

Posted By: WendellSmith
Subject: passing CString arguments to dll functions
Date Posted: 10 Feb 14 at 3:32PM

I am hoping this is easy -- Is there an easy way to convert a CString to the type required for the dll calls (wchar_t *)?

I have tried a bunch of things but not found the magic code :)

CString Label = "xx";

ConvertedLabel = ??; // how to get the CString Label into a format to pass into functions?

QP.DrawText(100, 500, ConvertedLabel); // this does not work.

Does anyone have a suggestion how to do this? [we are using MSVC6]

Thanks

Replies:

Posted By: Ingo
Date Posted: 11 Feb 14 at 7:59AM

Hi Wendel!

Microsoft will help:

http://msdn.microsoft.com/de-de/library/ms235631.aspx" rel="nofollow - http://msdn.microsoft.com/de-de/library/ms235631.aspx

I think there'll be a similar page in english, too ;-)

Cheers and welcome here,

Ingo

-------------
Cheers,
Ingo

Posted By: AndrewC
Date Posted: 11 Feb 14 at 1:17PM

Wendell,

Can you try calling QP.DrawTextA - 'A' is for the Ansi string version. It should get you started.

Have you tried using CStringW ?

Here is some code that compiles and runs in an VS2010 MFC project.

if (QP->UnlockKey(_T("<<< insert license key here >>>")) == 1)

{

int ret;

QP->AddTrueTypeFont(L"Wingdings", 0);

QP->SetOrigin(1);

QP->DrawText(100, 20, L"Hello World");

QP->SetTextSize(18);

ret = QP->DrawText(100, 500, _T("Hello world"));

ret = QP->SaveToFile(_T("HelloFromDLL.pdf"));

CStringW filename = L"f:\\downloads\\1.pdf";

ret = QP->LoadFromFile(filename, L"");

delete QP;

}

Andrew.