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okay, I have this array:
double x_coord1[80][10];
this is one of my function prototypes:
void NewCoordinates(double* xcoord1, double* ycoord1, int global_numcoord1, double* x_coord1, double* y_coord1);
and when I call on the function like so:
NewCoordinates(xcoord1, ycoord1, global_numcoord1, x_coord1, y_coord1);
I get this error:
C:\Windows\Desktop\QE2 heart program\TestGLView.cpp(460) : error C2664: 'NewCoordinates' : cannot convert parameter 4 from 'double [80][10]' to 'double *'
what am I doing wrong?
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I am sorry, I was writing a test program to make sure that I gave you good advice, and I was distracted in the middle. When I came back to write my message to you, I assumed that the code that I got was working.
Woods13 gives the correct way to do it:
double x[][80]
or
double **x
The way that I suggested is for dynamic arrays that are declared like this:
double x[20 * 80];
then your array is one dimensional.
Checkout my Guide to Win32 Paint for Intermediates
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void AcceptArray(double var[][10]) ;
That should do the trick.
//------------------------
CSignature::Jeff() ;
PostMessage(WM_QUIT) ;
//------------------------
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void Accept2DArray (double **);
HTH
---
CPUA 0x5041
Sonork 100.11743 Chicken Little
It may be that your sole purpose in life is simply to serve as a warning to others.
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Hi,
I want to collect the system small icons (typically 16x16 pixels; showing at the left within a windows´ titlebar) from any application into a bitmap stripe. "ExtractIcon" works only for system large icons (typically 32x32 pixels).
Does anyone know how to get at the HICON?
Best regards,
Amar
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Try LoadIcon
Best regards,
Alexandru Savescu
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Thanks, Alexandru,
but... I have found this in MSDN Library:
"LoadIcon can only load an icon whose size conforms to the SM_CXICON and SM_CYICON system metric values."
SM_CXICON and SM_CYICON correspond to 32x32.
Any other idea?
Amar
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try LoadImage(). Note that you'll first have to load the module (dll or exe) into memory in order to have a handle to pass in.
Developers that like shiny objects also dig case mods and scratch-and-sniff stickers. Klaus Probst, The Lounge
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I try..
HICON hiChild16 = (HICON)::LoadImage(NULL, pszAppDir, IMAGE_ICON, 16, 16, LR_LOADFROMFILE);
... but this returns always a NULL pointer.
pszAppDir contains the path and filename of the desired application.
What do I wrong?
Amar
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An application is not an icon file. However, an application can have icons in it's resources. You need to load the application into memory (try LoadLibrary()) and then pass the HINSTANCE returned from that into LoadImage(). You'll also have to specify the resource ID of the icon.
Alternately, you could use ExtractIconEx(). Check out this article for an example.
Developers that like shiny objects also dig case mods and scratch-and-sniff stickers. Klaus Probst, The Lounge
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Many, many thanks, Shoq9!!!
With "ExtractIconEx" it works perfectly!!!!
 Amar
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Many icon contain 16x16 sub-icons,Use Icon Searcher to collect system icons.
Icon Searcher performs fast scan of all local hard
disks for icon images(Support XP style icon). The
program handles lots of different file formats,
like DLL, EXE, ICO, ICL, OCX ,SCR, CPL ,BPL and
extracts all available icons from files to the user-friendly visual image list.
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Keywords: functional library, functors, ponter to members
Hello,
I do need som help regarding casting to member functions.
I do want to implement a parent class named 'CCommandManager' that would implement a vector container with member function pointer to be called scheduled.
typedef void(*pt2func)(LPVOID);
// command table entry
typedef struct _tagCommandEntry {
pt2func lpfunc; //member function pointer
LPVOID lpparam; //member function parameter
} *LPCOMMANDENTRY,COMMANDENTRY;
class CCommandManager
{
public:
CCommandManager();
virtual ~CCommandManager();
//Adds new entry to the vector
void addEntry (pt2func lpfunc , LPVOID lpparam);
//calls function member
void run();
private:
std::vector <commandentry> m_vcommandTable;
};
//run goes through vector entries and call function members
void CCommandManager::run() {
std::vector<commandentry>::iterator itr;
for (itr = m_vcommandTable.begin() ;
itr != m_vcommandTable.end() ; itr++) {
(itr->lpfunc) (itr->lpparam); //member function call
}
}
The second class will implement this interface
class CMyClass : public CCommandManager
{
public:
//member function
void funcA (LPVOID lpp) { /*does nothing */};
};
void main( void ) {
CMyClass c;
UCHAR a = 'a';
c.addEntry(a,1000,(pt2func)c.funcA,(LPVOID)&a); //ERROR
}
This is what I get when compiling
>error C2440: 'type cast' : cannot convert from '' to 'void (__cdecl *)(void *)'
As you can see sintax is much more like C function pointers calling, I've been looking some resources but information is quite confusing
Ideally any class that implement CCommandManager interface would be able to add to the vector (schedule) any of its member functions, no matter what type or number of paramteres (I know this is quite hard to achive)
After adding to the vector whatever functions you wan't to schedule in time, CCommandManager::run method will call member functions whatever order has been specified.
I hope you guys got the idea, and will be able to give me some hint.
Do I use functors? how?
NOTE: ask for source code to carlossg00@hotmail.com.
Thanks in advanced.
Carlos.
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You function pointer need to be static
class CMyClass : public CCommandManager
{
public:
//member function
static void funcA (LPVOID lpp) { /*does nothing */};
};
Normski. - Professional Windows Programmer
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Norm Almond wrote:
You function pointer need to be static
Nope, but this is a workaround.
static void funcA(LPVOID lpp, CMyClass* pThis);
when you call funcA pass in a pointer to your class, now you can have full access.
Normski. - Professional Windows Programmer
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You call addEntry like this:
c.addEntry(a,1000,(pt2func)c.funcA,(LPVOID)&a); //ERROR
and you declared it like
voidid addEntry (pt2func lpfunc , LPVOID lpparam);
How sould it convert a char to a pointer to function?
Best regards,
Alexandru Savescu
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is there a way to set the enter key to work like a tab key when moving through different cedit controls? or would i have to create a keypress event for each control?
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Yes there is. Override your PreTranslateMessage function as follows:
BOOL CMyDialog::PreTranslateMessage(MSG* pMsg)
{
if (pMsg->message == WM_KEYDOWN && pMsg->wParam == VK_RETURN)
{
CWnd *pWnd = GetFocus() ;
if (pWnd != NULL)
{
CEdit *pEdit = static_cast<CEdit*>(pWnd) ;
if (pEdit)
{
pMsg->wParam = VK_TAB ;
}
}
}
return CDialog::PreTranslateMessage(pMsg);
}
This converts all return presses to tabs so that it should tab from control ro control instead.
Roger Allen
Sonork 100.10016
If I'm not breathing, I'm either dead or holding my breath.
A fool jabbers, while a wise man listens. But is he so wise to listen to the fool?
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That should have read
CEdit *pEdit = static_cast<CEdit*>(pWnd) ; // returns NULL if its not a CEdit* control
but the HTML parser stripped it out
Roger Allen
Sonork 100.10016
<small>If I'm not breathing, I'm either dead or holding my breath.</small>
<small><b>A fool jabbers, while a wise man listens. But is he so wise to listen to the fool?</b></small>
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I got the problem, that the combobox can be edited by the user. but i just want him to choose from my values in the list.
the option of "DROPDOWN LIST" isn't of use, cause i have to tell the combobox which value it should have, everytime the dialog comes up.
so my aim: a list field, where i can define the initialsing value.
knows somebody any solution?
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I cannot see why the combo box style CBS_DROPDOWNLIST isn't of any use since it does exactly what I guess you want: disabling the edit box of your combo.
If you want to populate your list, or set it to an initial value, do it in a handler for WM_INITDIALOG. That way your combos list will be initialized before your dialog is shown.
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If i disable the Editbox by using CBS_DROPDOWNLIST, the dropdown field is empty, even if i initialised the variable with 0. so i want the 0 to be (pre)chosen from the list (values from 0 to 3). when i use dropdownlist, the dropdown cant be edited, but is also blank when the dialog comes up...
do you understand what i mean???
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If your using MFC (???)
try the following in your
BOOL CDDDDIalog::OnInitDialog()
{
CDialog::OnInitDialog();
m_wndCombo.AddString("#1");
m_wndCombo.AddString("#2");
m_wndCombo.AddString("#3");
m_wndCombo.SetCurSel(0);
return TRUE;
}
If you're not using MFC, in your handler for WM_INITDIALOG, try something like:
::SendMessage(hWndCombo, CB_ADDSTRING, 0, (LPARAM)"#1");
::SendMessage(hWndCombo, CB_ADDSTRING, 0, (LPARAM)"#2");
::SendMessage(hWndCombo, CB_ADDSTRING, 0, (LPARAM)"#3");
int nIndex = 0;
::SendMessage(hWndCombo, CB_SETCURSEL, nIndex, 0);
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trying to compile a Visaul C++ dll for a VB application.
what setting must I set.
I have created the following heading:
#define CEEPROGS
extern "C" // need for 'C' & VB progs
{
#ifdef CEEPROGS
declspec(dllexport)
#else
int APIENTRY CVDDLL_Main(char *Src,int Srclen,char *DestName,char *ErrorLog);
#define OURCALLING APIENTRY
#endif
}
and from the VB side I declared it as:
Public Declare Function CVDDLL_Main Lib "cvddllmain.dll" (ByVal sFile As String, _
ByVal iLen As Integer, _
ByVal sFileDesc As String, _
ByVal sErrorLog As String) As Integer
now everytime i call CVDDLL_Main I get a bad dll calling convention error?
Confusios say "Man who run in front of car get tired, Man who run behind car get exhausted."
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