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Delete(Take a backup if you want) the .tli and .tlh from the debug folder and rebuild the project. Make sure the delete files are created again.
Then check the CreateControl function. Use the GetLastError() to examine what went wrong.
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Thanks for your reply. CreateControl succeeded with a return value:
TRUE ;
What my question is: why the handle of
wnd is still
NULL .
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Falconapollo wrote: I run the code wich VC++ 6.0, everything is OK. But when run the same code under Visual C++ 2010, the handle of
wnd (namely
m_hWnd ) is always NULL.
Maybe something was fixed in subsequent versions of VS.
Have you tried making wnd a global variable or class member?
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
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Hello. I have a pointer which I want to assign to one of my member variables of class. Both the pointer and the object are of same type. How do I assign this pointer to this object. Here is what I mean
class ABC
{
ClassName obj1;
void AssignValue(ClassName* ptrValue)
{
obj1 = ptrValue;
}
};
But I am getting this error saying No operator "=" matches the operands. What do I do? Thanks for any input.
This world is going to explode due to international politics, SOON.
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obj1 is an object, not a pointer. You need to change your definition to:
ClassName* obj1;
One of these days I'm going to think of a really clever signature.
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This is what I was talking about. Is there no way ( like: I could cast it somehow ) to assign this pointer to the object? I don't wan to change it.
This world is going to explode due to international politics, SOON.
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AmbiguousName wrote: I don't wan to change it.
You have no choice; an object is not a pointer and cannot be cast as such. You also have the problem that obj1 will already have been instantiated in the constructor when your object is first created.
One of these days I'm going to think of a really clever signature.
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Well, you can cast a pointer to an object - in the same way that you can eat poisonous mushrooms: only once.  (provided you manage to get past the compiler that is trying to save you from that embarassement)
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Well, yes you can do anything you like ...
One of these days I'm going to think of a really clever signature.
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Please check this.
void AssignValue(ClassName* ptrValue)
{
ClassName& localObject = *ptrValue;
obj1 = localObject;
}
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Yes, I was about to suggest this, but there is an error in this code: you cannot define a reference that is not const - it has to be
const ClassName& localObject = *ptrValue;
[edit]forget what I wrote next...
Instead of your suggestion, you could just do the assignment directly:
obj = *ptrValue;
Assuming that you have a valid implementation of the assignment operator, this should work.
[/edit]
modified 25-Oct-12 7:41am.
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According to the compiler this will not work because obj1 is not a modifiable lvalue; it is an existing object, and cannot be set to something else.
One of these days I'm going to think of a really clever signature.
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That is not my understanding, unless you are using a compiler where ClassName has a very specific predefined meaning. I was assuming that was just meant as a synonym for the actual class rather than a keyword. E. g. this should work:
class foo {
int val;
public:
foo(int v) : val(v) {}
int get() const { return val;}
};
class ABC {
foo obj1;
public:
void AssignValue(foo* ptr) {
obj1 = *ptr;
}
};
At least my compiler accepts it.
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You are correct; I had to add default constructors (MS C++), but it then did what was required.
One of these days I'm going to think of a really clever signature.
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Yes, but this changes obj1, which may or may not be what the original question didn't want (if the object is expensive to copy, making it a pointer rather than object, as previously suggested, might be the better solution).
If AmbiguousName has worked more with C# or Java, where the references are implicit, working with pointers might be confusing.
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Well, not only his name is Ambigous, his inquiry is, too: it isn't clear whether his problem is that he cannot assign to obj1, or that he cannot assign it from a pointer. Anyway, the solutions have been pointed out, he just needs to pick the right one.
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Have you tried to change that line of code to this
obj1 = *ptrValue;
This will make your obj1 member variable be a copy of the object that is pointed to by ptrValue. 
Chris Meech
I am Canadian. [heard in a local bar]
In theory there is no difference between theory and practice. In practice there is. [Yogi Berra]
posting about Crystal Reports here is like discussing gay marriage on a catholic church’s website.[Nishant Sivakumar]
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So have you tried creating an assignment operator in the ClassName class?
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
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AssignValue is a clear hint of what you intend to do: assign to the object obj1 the value held by the object pointed by ptrValue, hence
void AssignValue(ClassName* ptrValue)
{
obj1 = *ptrValue; }
Note you should define the ClassName assignment operator in order to make such code work.
Veni, vidi, vici.
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Much clearer answer, I think.
Chris Meech
I am Canadian. [heard in a local bar]
In theory there is no difference between theory and practice. In practice there is. [Yogi Berra]
posting about Crystal Reports here is like discussing gay marriage on a catholic church’s website.[Nishant Sivakumar]
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Hello Friends
I was using code
void CMainFrame::OnInitMenuPopup(CMenu* a, UINT b, BOOL c)
{
FrameWnd::OnInitMenuPopUp( a,b,c);
}
And this one displaying MenuItems correctly.
Now,i trying to add icons to MenuItems.So for that I am using extenal CoolMenuManager to show up Icons with menuItems.
Here is code for this :
void CMainFrame::OnInitMenuPopup(CMenu* a, UINT b, BOOL c)
{
if(m_menuManager.InitMenuPopup(a,b,c))
FrameWnd::OnInitMenuPopUp( a,b,c);
}
Now, in this case,If i use External fn then only icons are showing up. But as now, i am calling frameWnd::OnINitMenupopup too then icons are coming and strings are not coming properly and only for some menuItems and even menuList is coming Wider covering whle screen.
Any Ideas?
Regards
Yogesh
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Without knowing what CoolMenuManager does it is impossible to even hazard a guess.
One of these days I'm going to think of a really clever signature.
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Hello
I found something interesting tht icons and text of menuItem is coming fine Except the menuList. As i click on any menu,menuList pops up and that list is coming wider,covering almost full screen.
I checked that OnMeasureItem which calculates ItemWidth and height is Having some Prob.As I Converted this from VC6 to VS2010.
BOOL CCoolMenuManager::OnMeasureItem(LPMEASUREITEMSTRUCT lpms)
{
ASSERT(lpms);
CMyItemData* pmd = (CMyItemData*)lpms->itemData;
ASSERT(pmd);
if (lpms->CtlType != ODT_MENU || !pmd->IsMyItemData())
return FALSE;
if (pmd->fType & MFT_SEPARATOR) {
lpms->itemHeight = GetSystemMetrics(SM_CYMENU)>>1;
lpms->itemWidth = 0;
} else {
CWindowDC dc(NULL); CRect rcText(0,0,0,0);
CFont* pOldFont = dc.SelectObject(GetMenuFont());
dc.DrawText(pmd->text, rcText, DT_MYSTANDARD|DT_CALCRECT);
dc.SelectObject(pOldFont);
lpms->itemHeight= max(GetSystemMetrics(SM_CYMENU), rcText.Height());
int cx = rcText.Width(); cx += CXTEXTMARGIN<<1; cx += CXGAP; cx += m_szButton.cx<<1;
cx -= GetSystemMetrics(SM_CXMENUCHECK)-1;
lpms->itemWidth = cx;
CMTRACE(_T("OnMeasureItem for '%s':\tw=%d h=%d\n"), (LPCTSTR)pmd->text,
lpms->itemWidth, lpms->itemHeight);
}
return TRUE; }
or u can refer to this link
http://www.codeforge.com/read/89577/coolmenu.cpp__html[^]
Regards
Yogesh
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I found tht Drawtext with parameter DT_CALCRECT is not returning right parameters of rectangle.
Any Ideas ?
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