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I have a class to wrap in COM dll. There is a c++ function declare
void Draw(HDC hdc, int x, int y, int w, int h)
I warp it in IDL as
HRESULT Draw([in] int** hdc, [in] int offx, [in] int offy, [in] int width, [in] int height);
STDMETHODIMP CImg::Draw(int** hdc, int offx, int offy, int width, int height)
{
AFX_MANAGE_STATE(AfxGetStaticModuleState());
image->Draw((HDC)(hdc), offx, offy, width, height);
return S_OK;
}
in this way, the hdc parameter will be IntPtr in C#
so in c# code look like
IntPtr hDC = e.Graphics.GetHdc();
if (img != null)
img.Draw(hDC, 0, 0, 100, 100);
e.Graphics.ReleaseHdc(hDC);
sounds very pretty code.
but when i turn to VB6, it doesn't work.
I write the code
Private Sub Form_Paint()
Call g.Draw(hDC, 0, 0, 100, 100)
End Sub
but compiler complain it use some type that vb can't recognize
What's the better way to make this interface be used by c#, vb6, dephi smoothly?
Any idea?
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Hi,
I have a C++ app that uses CHtmlView (MSHTML) and sets a div contentEditable="true" to enable editing.this works fine, except the Enter key isn't being processed at all. ie. Press Enter and nothing happens. If I use IHTMLDocument2::designMode then Enter works as expected. I've verified that my C++ code isn't preventing Enter from getting to MSHTML.
If I add an OnKeyUp() JS handler and process Enter there I can add <p> or <br> ok, however this breaks if you are within an Ordered/UnOrdered list as you obviously don't want to enter a <p> tag there. I guess I can write more code to hanlde this, however I'd rather just let MSHTML handle the Enter key for me.
Note that this is only an issue when I host MSHTML in my C++ app. If I use some simple html in IE with <div contentEditable="true" ..></div> then Enter works as you would expect it to.
I've searched high and low for a way to resolve this to no avail. Any suggestions much apprecited.
Neville Franks, Author of ED for Windows. Free Trial at <a href="http://www.getsoft.com">www.getsoft.com</a>
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I have the same problem...and went through the same trial and error... 
Did you ever manage to figure out what was going on?
If so would you mind sharing?
Cheers 
How do I print my voice mail?
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Hi!!!
Many of the examples of file reading using CFile uses
the char[] variable as its input buffer i.e.
<br />
char buffer[256];<br />
file.read(buffer, 256);
<br />
when i tried using a pointer to char as the buffer i get a debug assertion failure... i.e.
<br />
<br />
char* buffer = NULL;<br />
file.read(buffer, 256);<br />
<br />
what's wrong with my code? do i have to perform initialization on the char buffer?
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You need to set char* buffer to point to some memory, not NULL.
eg.
char* buffer = new char[256]; and don't forget to:
delete buffer; when you are done.
Neville Franks, Author of ED for Windows. Free Trial at www.getsoft.com
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you need to free up some memory for the read to work
buffer = new char[ whateversizeyouwant]
then do your read
cheers
bryce
---
Publitor, making Pubmed easy.
http://www.sohocode.com/publitor
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I have a vector of type char and I have a current variable of type string, I am using a function to look for current in vector so:
find(vec.begin(), vec.end(), current);
It gives an error which I don't know how to fix. Please help me.
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Snyp wrote:
I have a vector of type char and I have a current variable of type string, I am using a function to look for current in vector so:
find(vec.begin(), vec.end(), current);
It gives an error which I don't know how to fix. Please help me.
find is a member function. Is this the complete code line?
My neighbours think I am crazy - but they don't know that I have a trampoline. All they see my head bobbing up and down over the fence every five seconds
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There is also a find in the std algorithms.
Thank You
Bo Hunter
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can you tell me how to use find in the std algorithms because i think that this is the only find I could find 
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Please post the error message. You need to ensure that you've #included <algorithm>. You either need to use name-space qualification directly:
std::find(vec.begin(), vec.end(), current); or a using declaration:
using std::find;
find(vec.begin(), vec.end(), current); or (least preferable) a using directive:
using namespace std;
find(vec.begin(), vec.end(), current); Otherwise, it's probably a type conflict, and you should post the error message.
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I did that, It seems that it does not like looking for strings.
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So, it compiles OK, but you're getting unexpected behaviour?
If you're using C-style strings, i.e. vec is a vector<char*>, you've probably hit the usual problem of shallow rather than deep comparison: find is comparing the pointers, rather than the strings pointed to. You could use find_if with a custom predicate (probably one that calls strcmp), but it's probably preferable to use a vector<string> instead.
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Hi!
I've created a class derived from a CObject class.
I use the serialisation method like it is explained in MSDN.
When I call the Serialize method of my object, I get the folling message:
"Unexpected file format."
when I trie to open a file previously saved.
Does anyone can help me?
Here my code, where m_MyObject is a MMOject object member of my document class:
<br />
void CMyAppDoc::Serialize(CArchive& ar)<br />
{<br />
CDocument::Serialize (ar);<br />
m_MyObject.Serialize (ar);<br />
}<br />
<br />
.....<br />
<br />
void MMObjects::Serialize( CArchive& archive )<br />
{<br />
CObject::Serialize (archive);<br />
<br />
if (archive.IsStoring ())<br />
{<br />
archive << m_Rect;<br />
archive << m_Type;<br />
}<br />
else}<br />
{<br />
UINT Type;<br />
archive >> m_Rect;<br />
archive >> Type;<br />
m_Type=(TYPEOBJECTS) Type;<br />
}<br />
<br />
Thks in advance!
Appstmd
http://www.appstmd.com
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Did you put the correct schema level in?
My neighbours think I am crazy - but they don't know that I have a trampoline. All they see my head bobbing up and down over the fence every five seconds
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can any one tell me a way, how to send message from a multithreaded server to one of the connected clients.
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Hello
I have outlook exp not outlook.
Can someone who has Outlook run regedit and tell me if you can find the following keys?
HKEY_CURRENT_USER\Identities\{xxxxxx-xxxx-xGUIDxxxx-xxxxx-xxxxxxxxxx}\Software\Microsoft\Outlook\Version
1. Dial During Poll
HKEY_CURRENT_USER\Identities\{xxxxxx-xxxx-xGUIDxxxx-xxxxx-xxxxxxxxxx}\Software\Microsoft\Outlook\Version\Mail
2. Poll For Mail
If not could you tell me what they do look like?
Also if anyone has older version of either outlook or outlook exp could you please tell me what they look like?
I am trying to avoid buying a copy of Outlook but need the REG info for a project.
Best Wishes and Happy Holiday's,
ez_way
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I use Outlook but have neither of the keys mentioned.
Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?
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Hi all,
My application writes some per user preference in their local settings(/documents and settings/usrname) and their HKCU\software\myapp key. I want to remove all of it during uninstall, any one has idea how to do it (using coding to automatically load hive other user, and remove the key, etc).
B'coz, right now the uninstaller only remove one user, the one that uninstalled my application and has admin rights.
Thanks.
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One solution is to search the entire registry.
Kuphryn
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I'm sure you're trying to be really tidy, but I don't think there's any easy way to do this. You'd probably need to CreateProcessAsUser to run a separate process under their credentials. That process would have to LoadUserProfile in order to ensure that the right user's registry hive was loaded.
I can't find any APIs that will allow you to find the set of user profiles on the local computer. You won't want to modify roaming profiles in case your application is installed elsewhere on the network (probably!)
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Once upon a time, distributing an Access database project required a special license for the redistributable bits, or the client had to buy Access and install it. I assume that was the Jet dbEngine. When creating a VC++ app that uses a .mdb file created in Access as its datasource, is this still necessary? Or does the driver selected when creating the project contain all the necessary stuff to talk to the database file?
I know I can do this better by developing on SQL Server and distributing MSDE, but this is a tiny db and it's much easier to bang out the skeleton in Access.
"Another day done - All targets met; all systems fully operational; all customers satisfied; all staff keen and well motivated; all pigs fed and ready to fly" - Jennie A.
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Roger Wright wrote:
Once upon a time, distributing an Access database project required a special license for the redistributable bits, or the client had to buy Access and install it.
There is a runtime version of Access included with MS Office 200 Developer. You can dist. the mdb and runtime version of Access to as many workstations as you want.
Roger Wright wrote:
When creating a VC++ app that uses a .mdb file created in Access as its datasource, is this still necessary?
No, a license is not required to distribute the mdb, Jet engine, or MDAC.
If you are using InstallShield to build your installation, (from memory) I think you can select the Jet engine merge module to be installed. However, I recommend distributing, and using, MDAC to connect your database with the application.
Roger Stewart
"I Owe, I Owe, it's off to work I go..."
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Roger Stewart wrote:
I recommend distributing, and using, MDAC to connect your database with the application.
That's what I was looking to find. Thanks! I've never in the past 12 years made enough money to afford Office Developer edition, so that route was beyond reach. MDAC is the way to go...
"Another day done - All targets met; all systems fully operational; all customers satisfied; all staff keen and well motivated; all pigs fed and ready to fly" - Jennie A.
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