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Most random number generators will provide a number between 0 and 1. If you want to produce numbers between 15 and 20, for example, the difference is 5 (20 - 15), and the offset is 15. So, generally, if you take rand()*5 + 15 you'll get numbers between 15 and 20.
rand() * range + offset
Dave
"You can say that again." -- Dept. of Redundancy Dept.
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better in this case will be
rand()%(range+1) + offset;
use srand to initial your randomgenerator
Heiko
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How can I convert a CString to a char * variable?
CString str;
char *szBuffer;
//code
.
.
.
szBuffer = (const char *) str; //why does this not work, and what do I have to do?
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Use the getBuffer function.
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CString str;
TCHAR *szBuffer=(LPTSTR)(LPCTSTR)str;
~RaGE();
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Rage wrote:
TCHAR *szBuffer=(LPTSTR)(LPCTSTR)str;
This only works is you do not write into the CString.
If you really need to write into it, you have to use GetBuffer()/ReleaseBuffer().
My opinions may have changed, but not the fact that I am right.
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Yep, I know, but in his initial example he tried to typecaste in a const char *, so ...
~RaGE();
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Yeah, but that type of stuff IS really dangerous.
It works once you understood when to use it (at a InsertItem() with a LVITEM / TVITEM.pszText for example).
But IMHO it is nothing to tell beginners. Shhhh!
My opinions may have changed, but not the fact that I am right.
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Hello I am looking for a source to get the common toolbar xp icons as described here[^]. I am really looking for the source files because I want to use them with alpha blending so I really need the transparency channel and it won't work if I just screencap and crop. I have been looking for them in systems DLL without luck.
Does anyone know?
Regards,
Nicolas
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hey all,
i'm a beginner and have one problem.
I want to program a CListCtrl(report-view) object with the resource-editor within a non-modal dialog. Always when I declare a variable with the assistent for the object(CListCtrl variable), i get a DEBUG ASSERTION FAILED during carring out my application. Why?????
The same Project within a modal dialog works fine.
Can everybody help me???
thanks
Stefcos
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What is the file and line # of the fired assertion?
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Is there a easy way to acces desktop icons and move them around in x and y pos?
I think I saw a program that did that a while ago.
/Jarek
He believed the commercials that said drink beer, get laid
but at closin' time he was alone, he didn't get paid.
Last night his lover was a razorblade..
"Dan Reed song Mix it up"
What do you want to patch today?
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How about getting a handle to the desktop window, and enumerating its child windows?
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Okey sounds interessting but do you have some sample code or an example?
I never did it before!
/Jarek
He believed the commercials that said drink beer, get laid
but at closin' time he was alone, he didn't get paid.
Last night his lover was a razorblade..
"Dan Reed song Mix it up"
What do you want to patch today?
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Something like:
HWND hDesktop = GetDesktopWindow();
EnumChildWindows(hDesktop, EnumProc, 0);
BOOL CALLBACK EnumProc( HWND hWnd, LPARAM lParam )
{
return TRUE; // to continue enumeration
}
I've not ever needed to do something like this before, but I suspect it will return more windows than just the icons. Top-level applications probably have the desktop as their parent window, too.
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Thank you David!
I tryed that to  and its just like you said it return manny windows, to manny.
But the search goes on I found a VB program that doing this and I am on my way to disassamble the code!
I think I have something to learn here It started as an effort to make a funny program but now its a chalange!
/Jarek
He believed the commercials that said drink beer, get laid
but at closin' time he was alone, he didn't get paid.
Last night his lover was a razorblade..
"Dan Reed song Mix it up"
What do you want to patch today?
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Try this:
LPMALLOC pMalloc;
LPSHELLFOLDER pDesktopFolder = NULL;
HRESULT hResult;
LPITEMIDLIST pidlItems = NULL;
LPENUMIDLIST ppenum = NULL;
ULONG celtFetched;
SHFILEINFO fi = {0};
hResult = SHGetMalloc(&pMalloc);
if (NOERROR == hResult)
{
hResult = SHGetDesktopFolder(&pDesktopFolder);
if (NOERROR == hResult)
{
hResult = pDesktopFolder->EnumObjects(NULL, SHCONTF_FOLDERS | SHCONTF_NONFOLDERS, &ppenum);
if (NOERROR == hResult)
{
while (hResult = ppenum->Next(1, &pidlItems, &celtFetched) == S_OK && (celtFetched) == 1)
{
SHGetFileInfo((const char *) pidlItems, 0, &fi, sizeof(fi), SHGFI_PIDL | SHGFI_ICON | SHGFI_DISPLAYNAME);
TRACE2("Icon handle for ]%s[ = %#x\n", fi.szDisplayName, fi.hIcon);
pMalloc->Free(pidlItems);
}
ppenum->Release();
}
pDesktopFolder->Release();
}
}
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Thank you David!
It works I can get the Desktopicons
I saw similar code in Q&A on MSDN Thank you again your code was better.
/Jarek
He believed the commercials that said drink beer, get laid
but at closin' time he was alone, he didn't get paid.
Last night his lover was a razorblade..
"Dan Reed song Mix it up"
What do you want to patch today?
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I've been reading some messages and articles, but I haven't found any example of using a DLL to store classes and then use them linking it dynamically in an exe.
At present, I'm using Delay Load to create instances of my classes, but I don't want to use .lib and .h files.
Is it possible to do that?
Thanks in advance.
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Cedric,
I think you might be overshooting the target here. COM is one thing, but you might also simply export a C++ coded class with the __declspec(dllexport) statement in MSDEV, and import it with __declspec(dllimport). Of course that technique requires C++ to be used on both sides (unlike COM).
Bernd
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Yep, that's rigtht, but in this case, you'll have to include the .h and the .cpp files from all your classes in the project then!
If you use a 'kindof' COM model, you'll just have to include the .h file from the interface (just virtual functions), and then use a global function from the dll that returns a pointer to the base class that is in fact 'a pointer to a specific child class'. So, in that way, you don't have to include .h and .cpp files from all your derived classes. The client program doesn't even know the existence of the derived classes: he just call virtual functions from the base class that are redirected to functions from the derived class.
Or, I perhaps misunderstood the question ?
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You didn't misunderstand the question, but the DLL export statement...
You have to include header files in both sides (there is no type library query or so), but the code stays on the server side (DLL). Just look at the whole thing as if it were a good old function library, only with dynamic linking, classes, C++, and so forth.
This is not a "kindof COM", this is a C++ class library. Plain, simple, and useful.
Bernd
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But I think, that exporting anything C++ means that the another compiler might not be able to import it (due to different non-standard name mangling) and you must use the same compiler then. But I can be wrong.
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