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Hi,
How can I delete a saved bitmap using the dfile name??
Ehsan Behboudi
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Use DeleteFile(), SHFileOperation(), or CFile::Remove().
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All of the above + _unlink
John
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Is there a way to properly display the new "XP" transparent 32-bit bitmaps (24b color + 8b alpha channel) as "normal" masked 24-bit bitmaps in Windows 2000/98?
I would like to avoid having to create 2 versions of every bitmap (XP version, Win2000/98 version), however the result I get is that the transparent sections in the 32-bit bitmap are displayed as a black background in Windows 2000/89. I would like to be able to choose the color in which the transparancy is converted into.
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Hi All,
I was wondering if someone could tell me the reason why my project builds every single file in my project everytime I try to execute the exe file? After i build the code, make no changes and hit the execute it says all the .obj file are out of date. It never did this before, but all of a sudden it is making me build all the .obj and exe twice.
I already did a clean and it still does it. I thought if i don't make any changes, the file would know this and not build them all again.
Many thanks in advance
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Try generating a make file. If the same problem occurs with nmake, maybe you'll be able to spot the dependency loop in the make file.
Brad
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This might sound like a stupid suggestion, but check the date/times on all the source modules. If any of them are in the future, this will happen. Happened to me once when someone screwed up the machine we used as a time server, when it got temporarily set to some time in 2007...
Steve S
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Why Transparrent blt not works in following code:
works with usual ::BitBlt()
<br />
works:<br />
::BitBlt(di.hdcDraw,<br />
0,0,100,100,<br />
m_hMemDC,<br />
0,0,
SRCCOPY );<br />
<br />
<br />
::TransparentBlt(di.hdcDraw,<br />
0,0,100,100,<br />
m_hMemDC,<br />
0,0,100,100,<br />
RGB(0,0,128) );<br />
<br />
__________________<br />
<br />
m_hMemDC = CreateCompatibleDC(0);<br />
<br />
HANDLE hOLDBitmap;<br />
<br />
hOLDBitmap=SelectObject(m_hMemDC, hBitmap);<br />
... code at above<br />
<br />
:DeleteDC(m_hMemDC);<br />
<br />
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I never could get TransparentBlt to work on win 9x, so I just use the true mask method which I found at http://www.codeguru.com/bitmap/CISBitmap.shtml[^]
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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Hi, I'm making a Dialog Based MFC app and need to initialize a variable that keeps track of how many times a certain button was pushed (OnButton1()). I tried initializing in in OnInitDialog(); but it still gives me an unidentified error when I try to manipulate it in the function. I can't initialize it in the function itself because then each time the function is called it will be reinitialized to 0. Should I create a member variable for the function? Any help would be great. Thanks.
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Anonymous wrote:
I tried initializing in in OnInitDialog(); but it still gives me an unidentified error when I try to manipulate it in the function.
Did you declare the variable in the class? An unidentified error (in a member function) has nothing to do with where you initialize it but where you declare the variable.
Anonymous wrote:
I can't initialize it in the function itself because then each time the function is called it will be reinitialized to 0.
If you declare it in the function you can initialize it there also if you use the static keyword before your declaration but this is not used as much as a regular member variable. Making it static will only initialize it once for the life of the dialog class.
John
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What is 'a member variable for the function'? If it's a member variable of your dialog class, then yes, that is what you should do. You can also make a static variable:
<br />
class FooDialog : public CDialog<br />
{<br />
void OnButton1()<br />
{ <br />
static int counter = 0;<br />
counter++;<br />
}<br />
}<br />
<br />
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Thanks for the help with the static. My counter works now, but can you show how to make OnButton a return function or someother way for other functions to use the counter variable? Thanks
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Hello,
Add a memeber variable in your class:
int m_nCounter;
In the constructor add:
m_nCounter = 0;
In the OnButton1() add:
m_nCounter++;
remove:
static int counter = 0;
counter++;
this should do the trick... 
A student knows little about a lot.
A professor knows a lot about little.
I know everything about nothing.
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When I read this question the first time I was screaming inside... What you want has nothing to do with a dialog and has everything to do with knowing basic C++. These are basic properties of classes in general. I would suggest looking at a C++ tutorial before trying to make a complicated MFC program.
Here is one that should help:
http://www.codeproject.com/useritems/beginnerclass.asp[^]
John
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yah ur right but i think a lot of people see mfc as c++ so to speak so they think learning mfc is learning c++
if u get my meaning here
"there is no spoon"
biz stuff about me
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I agree... When I posted that I thought it sounded a little rude (I try hard to avoid that), but to me it was obvious that they did not know very much C++. Better learn C++ before you try MFC...
John
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Hi All,
How do I get the information that a user enters from a edit box?
I want to open a file that the user enters...so basically i want to get the string entered by the user into the open file call.
Many thanks in advance.
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void GetWindowText( CString& rString ) const;
or if you assigned a CString variable to the Edit box, use UpdateData(TRUE) and the variable should contain the text.
Maximilien Lincourt
"Never underestimate the bandwidth of a station wagon filled with backup tapes." ("Computer Networks" by Andrew S Tannenbaum )
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CString strFilename;<br />
m_edit.GetWindowText (strFilename);
/ravi
Let's put "civil" back in "civilization"
Home | Articles | Freeware | Music
ravib@ravib.com
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Use GetWindowText() in MFC or handle the WM_GETTEXT message in win32
If you can keep you head when all about you
Are losing theirs and blaming it on you;
If you can dream - and not make dreams your master;
If you can think - and not make thoughts you aim;
Yours is the Earth and everything that's in it.
Rudyard Kipling
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Thanks everyone....I was using GetLine, didn't realize until right now that was only for multiple line boxes.
can you tell i am new to programming?!?!?!
In another case, I will have a number. Is there a way to determine if this number is a negative? How do I just look at the first character in the string?
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Use atoi() for an int or atof() for a float and check if the number is less than zero.
<br />
CString str = "-9";<br />
int value = atoi(str);<br />
if (value < 0)<br />
{<br />
.....<br />
.....<br />
}
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Thanks....
Is there a place where I can find all these types of conversion "tool/methods"? I know what this one does (atoi) but I know there are other ones that I may find useful.
Many thanks again.
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