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I don't know the exact grey color of buttons but I can tell you this much. What you are looking for might not be the best solution. In Windows, the default colors can be changed thus making your buttons look awkward. You have no way of knowing before hand what the background color would be. If you implement a bitmap button and set its background color to the dialog box color, it might work on your system, but it might not work on other systems.
To draw a bitmap button with transparent background you need to use a mask when painting the bitmap. So you need to have two bitmaps, one that stores the normal image and the other one that has the mask. A mask is nothing but an image that corresponds to the original but the background is white and the foreground is black. You need to perform the following operations:
1. Output the normal bitmap by XOR-ing it with the target device
2. Output the mask bitmap by AND-ing it with the target device at the exact location of the original bitmap.
3. Output the normal bitmap by XOR-ing it with the target device.
At the end you will have a transparent button.
// Afterall, I realized that even my comment lines have bugs
When one cannot invent, one must at least improve (in bed).-My latest fortune cookie
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Can you give a code example?
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I am sorry but I am away from my normal workstation, so I at this moment don't have access to my code. What I described is kind of involving, and it doesn't consists of just a few lines of code, so I cannot reproduce it right now. You need to create a CBitmapButton derived class, and then override DrawItem if I remember it correctly. Then you need to use BitBlt to perform bitwise operations. However, to avoid flicker you should not write directly to the target device. You should create a bitmap in the memory and perform the operations there. Sorry that I cannot help you with source code.
// Afterall, I realized that even my comment lines have bugs
When one cannot invent, one must at least improve (in bed).-My latest fortune cookie
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private:
CButton Comps[5];
CRegKey reg;
.......
(reg.Open(HKEY_LOCAL_MACHINE, "Software\\ShutDown") == ERROR_SUCCESS ) {
reg.QueryDWORDValue("NumOfComputers", num);
POINT pt1, pt2;
pt1.x = 20; pt1.y = 20;
pt2.x = 120; pt2.y = 50;
ULONG Cname_sz;
char buf[20];
CString cn, Cname;
for (int i=0; i< maxComps; i++) {
CRect tmpRect(pt1, pt2);
LPCTSTR val = (LPCTSTR) itoa(i, buf, 10);
int len = Cname.GetLength();
reg.QueryStringValue(val, (Cname.GetBuffer(len)), &Cname_sz);
Comps[i].Create(_T(Cname), WS_CHILD|WS_VISIBLE|BS_AUTOCHECKBOX,
tmpRect, this, 1210+i);
pt1.y += 30; pt2.y += 30;
Cname.Empty();
}
.........
Best Regards,
exceter
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Exceter wrote:
reg.QueryDWORDValue("NumOfComputers", num);
Exceter wrote:
reg.QueryStringValue(val, (Cname.GetBuffer(len)), &Cname_sz);
These functions don't exist (I am talking about VC++ 6.0, I don't know about .NET). You need to use QueryValue. I didn't check the rest of the code. You need to compile it and read the errors that the compiler will give you. I am sure that the compiler will complain very loudly by saying that QueryDWORDValue does not exist, and the same thing can be said about the rest of the code.
// Afterall, I realized that even my comment lines have bugs
When one cannot invent, one must at least improve (in bed).-My latest fortune cookie
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reg.QueryDWORDValue("NumOfComputers", num);
reg.QueryStringValue(val, (Cname.GetBuffer(len)), &Cname_sz);
These functions exists in VC7, they do not make the error. The error is I think with the CButton array, because if I make a sinlge button (not array) the program works, that is, the dialog and the button are created.
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reg.QueryStringValue(val,(Cname.GetBuffer(len)), &Cname_sz);
Comps[i].Create(_T(Cname),
WS_CHILD|WS_VISIBLE|BS_AUTOCHECKBOX,
tmpRect, this, 1210+i);
pt1.y += 30; pt2.y += 30;
Cname.Empty();
I do see something wrong with your code(but then again it is 3:43 am for me and I am very tired). Again I have never used VC7 so I could be wrong again, but a call to GetBuffer should be followed by a call to ReleaseBuffer (before you can use any other CString functions). Therefor, after QueryStringValue make a call to ReleaseBuffer.
Exceter wrote:
These functions exists in VC7, they do not make the error.
I didn't know that, that's why I refered VC6.
// Afterall, I realized that even my comment lines have bugs
When one cannot invent, one must at least improve (in bed).-My latest fortune cookie
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Yes, I gorgot to Release the buffer, thanks.
but, now I have an error in ReleaseBuffer()!!!
the error message is:
file:c:/...vc7//atlmfc/include/atlsimpstr.h
line: 718
Expression: nLength <= GetData()->nAllocLength
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Could well be a buffer overrun then. When you do GetBuffer() instead of using the length, try specifying something like 512.
Steve S
[This signature space available for rent]
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Greate, it works. thanx.
but, how to make it to work with Getbuffer()?
well, in this program I know the estimated sizes of the buffer, but if it exceeds the buffer size I've shoen there?
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private:
CButton Comps[5];
CRegKey reg;
.......
(reg.Open(HKEY_LOCAL_MACHINE, "Software\\ShutDown") == ERROR_SUCCESS ) {
reg.QueryDWORDValue("NumOfComputers", num);
POINT pt1, pt2;
pt1.x = 20; pt1.y = 20;
pt2.x = 120; pt2.y = 50;
ULONG Cname_sz;
char buf[20];
CString cn, Cname;
for (int i=0; i< maxComps; i++) {
CRect tmpRect(pt1, pt2);
LPCTSTR val = (LPCTSTR) itoa(i, buf, 10);
int len = Cname.GetLength();
reg.QueryStringValue(val, (Cname.GetBuffer(len)), &Cname_sz);
Comps[i].Create(_T(Cname), WS_CHILD|WS_VISIBLE|BS_AUTOCHECKBOX,
tmpRect, this, 1210+i);
pt1.y += 30; pt2.y += 30;
Cname.Empty();
}
.........
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what is your problem with this piece of code?
Don't try it, just do it! 
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Hi Folks,
Iam trying to find out what is the message generated when double clicked on the titlebar of a window.Iam interested with both the messages that is generated during normal to maximize and maximize to normal movement of the window.
Your help is highly appreciable.
Regards,
pradeep
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Use Spy++.
Cheers,
Fredrik
"Felix qui potuit rerum cognoscere causas."
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Hi,
I have rect i want to fill with transparent gradient
( so that one will see what's below the rect ).
The function should look like :
void DrawTransparentGradient(CDC* pDC, CRect* pRect,COLORREF clrStart,COLORREF clrEnd);
Anyone knows how to implement it ?
Thanks a lot!
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You want to do an alpha blend. GDI+ has a few functions that will do that for you.
Sonork 100.11743 Chicken Little
"You're obviously a superstar." - Christian Graus about me - 12 Feb '03
Within you lies the power for good - Use it!
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I'll look for it , hopefully it will help 
Thanks
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After installing Platform SDK (and setting the include and lib directory in VC++ 6) I am facing a problem with "new" as follows.
when I allocate memory:
if(m_NoData>0)
{
I=new int[m_NoData];
for(i=0;i
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First of all, you haven't closed your 'for-loop' with a ')', but i'm assuming that's a typo and probably isn't the reason for the error. What kind of type is "I" and "m_NoData"?
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How did you set the include and lib directory? I have seen people doing that manually when in fact you should go to Programs->MS SDK Folder(whatever name you're using)->Visual Studio Registration->Register PSDK etc...
// Afterall, I realized that even my comment lines have bugs
When one cannot invent, one must at least improve (in bed).-My latest fortune cookie
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I have a DLL I need to use, and it came with a header file and a DEF file. They appear to have been written in C. I need to make a LIB file from the DEF file before the DLL is useable. I tried using the LIB command with the /DEF switch, but I must not be using it correctly. I also found instructions to modify the header file, compile to get an OBJ file, and then use the LIB command to create a LIB file, but I didn't succeed at that either. Does anyone know how to do this? Here's part of the header file.
#if defined(CALLED_DLL)
# define DLL_IMPORT __declspec(dllexport)
#else
# define DLL_IMPORT __declspec(dllimport)
#endif
extern "C" int DLL_IMPORT __stdcall StoreX(
char* FilePath,
char* ServerAddress
);
#endif
Here's the DEF file:
LIBRARY MYDLL.DLL
EXPORTS
StoreX@80 @1 ; StoreX
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Usually its :-
LIB /DEF:<.DEF file name>
to generate the import library and exports file. The base name of the import library will be the base name of the .DEF file. Use /OUT: to control the output library name.
This is from Microsoft KB Article 131313 (was Q131313)
http://www.codeproject.com/cpp/libfromdll.asp[^] may also be of some use
'hth', Garth
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I want to be able to pass an array of structures in on dialog class to another inorder to update and edit or add, this is being done inorder to limit access in the main dialog and keep the input for the end user simple. This was originally three programs that were originally compiled in C and then in C++, but have decided to combine all three into one using dialogs Can some one help me please
Candleman
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Are the dialogs modal? and in which order are they displayed??
but.. you can make just a public member to the both dialogs:
class Dialog1{
public:
MyArray m_Array[A_LOT];
};
class Dialog2{
public:
MyArray m_Array[A_LOT];
void CopyArray(MyArray*);
};
Dialog1 dlg1;
dlg1.MakeStuff();
Dialog2 dlg2;
dlg2.CopyArray(dlg1.m_Array);
dlg2.MAkeStuff();
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Hi, when i install a application using datagrid in a no-VC environment and register msdatgrd.ocx by regsvr32 msdatgrd.ocx, and run application, i was told that the data can not be bind. Is there any dll or ocx I need to register or installed?
Thanks.
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