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Change select box option background color
...(150, 150, 150, 0.3);
}
select option[value="3"] {
background: rgba(200, 200, 200, 0.3);
}
select option[value="4"] {
background: rgba(250, 250, 250, 0.3);
}
<select>
<option value="">Please choose</option>
<option value="1">Option 1</option>
&l...
Where does Visual Studio look for C++ header files?
I checked out a copy of a C++ application from SourceForge (HoboCopy, if you're curious) and tried to compile it.
6 Answers...
Use JNI instead of JNA to call native code?
...
JNA does not support mapping of c++ classes, so if you're using c++ library you will need a jni wrapper
If you need a lot of memory copying. For example, you call one method which returns you a large byte buffer, you change something in it, then you need to...
What is a C++ delegate?
What is the general idea of a delegate in C++? What are they, how are they used and what are they used for?
6 Answers
...
Count character occurrences in a string in C++
...r c in string s
Check if c equals '_'
If yes, increase count
EDIT: C++ example code:
int count_underscores(string s) {
int count = 0;
for (int i = 0; i < s.size(); i++)
if (s[i] == '_') count++;
return count;
}
Note that this is code to use together with std::string, if you...
CMFCTabCtrl的使用、颜色样式调整 - C/C++ - 清泛网 - 专注C/C++及内核技术
...，AutoColor自动设置Tab颜色效果等。1.在指定位置处创建一个CMFCTabCtrl，并给其添加4个CEdit:
CRect rectTab;
CEdit m_wnd1;
CEdit m_wnd2;
CEdit m_wnd3;
CEdit m_wnd4;
CMFCTabCtrl m_wndTab;
m_wndTabLoc.GetWindowRect (&rectTab);
ScreenToClient (&rectTab);
m_wndTab...
What are the differences between struct and class in C++?
...d difference between classes and structs.
Quoth the standard (§11.2.2 in C++98 through C++11):
In absence of an access-specifier
for a base class, public is assumed
when the derived class is declared
struct and private is assumed when the class is declared class.
And just for completen...
What's the Hi/Lo algorithm?
...machine word size, rather than the meaningfully-sized ranges (eg obtaining 200 keys at a time) which a human might sensibly choose.
Hi-Lo usage tends to waste large numbers of keys on server restart, and generate large human-unfriendly key values.
Better than the Hi-Lo allocator, is the "Linear Ch...
How do I make a semi transparent background?
...NG up to 10x10, 100x100, etc. Whatever makes sense on your page. (I used a 200x200 PNG and it was only 0.25 kb, so there's no real concern over file size here.)
After visiting this post, I created my web page with 3, 1x1 PNGs with varying transparency.
Dreamweaver CS5 was tanking. I was having fl...
drag drop files into standard html file input
... of important*/
width: 300px;
/*Sort of important*/
height: 200px;
position:absolute;
left:50%;
top:100px;
margin-left:-150px;
border: 2px dashed rgba(0,0,0,.3);
border-radius: 20px;
font-family: Arial;
text-align: center;
position: relativ...