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C# - how to determine whether a Type is a number
...termine whether or not a given .Net Type is a number? For example: System.UInt32/UInt16/Double are all numbers. I want to avoid a long switch-case on the Type.FullName .
...
What is the difference between String and string in C#?
... System.Byte
sbyte: System.SByte
short: System.Int16
ushort: System.UInt16
int: System.Int32
uint: System.UInt32
long: System.Int64
ulong: System.UInt64
float: System.Single
double: System.Double
decimal: System.Decimal
char: System.Char
Apart from string and object, the a...
Using .NET, how can you find the mime type of a file based on the file signature not the extension
...t(@"urlmon.dll", CharSet = CharSet.Auto)]
private extern static System.UInt32 FindMimeFromData(
System.UInt32 pBC,
[MarshalAs(UnmanagedType.LPStr)] System.String pwzUrl,
[MarshalAs(UnmanagedType.LPArray)] byte[] pBuffer,
System.UInt32 cbSize,
[MarshalAs(Un...
VC MFC工具栏(CToolBar)控件 - C/C++ - 清泛网 - 专注C/C++及内核技术
... CWnd* pParentWnd,//按钮的父窗口(按钮属于哪个窗口）
UINT nID//指明按钮控件ID号
);
这个函数的第二个参数dwStyle是按钮控件的样式，也就是在可视化添加按钮控件时，右击按钮控件，选择属性，之后会弹出一个对话框，这...
How do I show a console output/window in a forms application?
...ion.
[DllImport("kernel32.dll")]
static extern bool AttachConsole(UInt32 dwProcessId);
[DllImport("kernel32.dll")]
private static extern bool GetFileInformationByHandle(
SafeFileHandle hFile,
out BY_HANDLE_FILE_INFORMATION lpFileInformation
);
[DllImport(...
Convert Data URI to File then append to FormData
...];
// write the bytes of the string to a typed array
var ia = new Uint8Array(byteString.length);
for (var i = 0; i < byteString.length; i++) {
ia[i] = byteString.charCodeAt(i);
}
return new Blob([ia], {type:mimeString});
}
From there, appending the data to a form s...
Difference between int32, int, int32_t, int8 and int8_t
... int16_t;
typedef signed int int32_t;
typedef unsigned char uint8_t;
There is quite more to that like minimum width integer or exact width integer types, I think it is not a bad thing to explore stdint.h for a better understanding.
...
CDHtmlDialog的基本使用（C++调用JS函数的实现） - C/C++ - 清泛网 - 专注IT技能提升
...DISPPARAMS dispParams,
VARIANT* varResult,
EXCEPINFO* exceptInfo,
UINT* nArgErr );
public:
afx_msg void OnBnClickedButton1();
JSCppInteractiveDlg.cpp末尾添加如下代码：
void CJSCppInteractiveDlg::OnBnClickedButton1()
{
// TODO: 在此添加控件通知处理程序代码
...
GetNextDlgTabItem用法详解，回车替代Tab键切换控件焦点 - C/C++ - 清泛网 ...
...age(MSG* pMsg)
{
// TODO: 在此添加专用代码和/或调用基类
UINT nKeyCode = pMsg->wParam;
if (pMsg->message == WM_KEYDOWN && pMsg->wParam == VK_RETURN)
{
CWnd *wnd = GetFocus();
if (wnd != NULL)
{
char str[256];
CString ClassName = _T("Button");
GetClassName (...
CDHtmlDialog的基本使用（C++调用JS函数的实现） - C/C++ - 清泛网 - 专注IT技能提升
...DISPPARAMS dispParams,
VARIANT* varResult,
EXCEPINFO* exceptInfo,
UINT* nArgErr );
public:
afx_msg void OnBnClickedButton1();
JSCppInteractiveDlg.cpp末尾添加如下代码：
void CJSCppInteractiveDlg::OnBnClickedButton1()
{
// TODO: 在此添加控件通知处理程序代码
...