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半个汉字的校验与处理(C++) - C/C++ - 清泛网 - 专注C/C++及内核技术
... // nMaxLen: 截断后的最大长度
char *GetTruncate(char *strSrc, int nMaxLen)
{
if (strSrc == NULL || nMaxLen == 0)
{
return NULL;
}
int len = strlen(strSrc);
if (len == 0)
{
return strSrc;
}
...
MFC 菜单背景色设置（菜单重绘） - C/C++ - 清泛网 - 专注C/C++及内核技术
...lType==ODT_MENU)
{
if(lpStruct->itemData == NULL) return;
unsigned int m_state = lpStruct->itemState;
CDC* m_dc = CDC::FromHandle(lpStruct->hDC);
//m_dc.Attach(lpStruct->hDC);
CString str = ((CMenuItemInfo*)(lpStruct->itemData))->m_ItemText;
LPSTR m_str = str.GetBuffer(str.Get...
stl multimap用法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...以重复的，而普通map中的key是不可以重复的。声明multimap<int, CString>mapTest;multimap<int, CString>::itera...multimap的特点为key是可以重复的，而普通map中的key是不可以重复的。
声明
multimap<int, CString>mapTest;
multimap<int, CStrin...
如何在Visual Studio中运行和调试汇编代码 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ual Studio中运行和调试汇编代码使用内联汇编__asm，如下：int _tmain(int argc, _TCHAR* argv[]){ int a = 1; __asm{ ...使用内联汇编__asm，如下：
int _tmain(int argc, _TCHAR* argv[])
{
int a = 1;
__asm{
xor eax, eax
...
c++ boost库 序列化与反序列化 - c++1y / stl - 清泛IT社区，为创新赋能！
...hive>
void serialize(Archive& ar, TOrder & obj, const unsigned int version = SERIALIZATION_VERSION)
{
ar & BOOST_SERIALIZATION_NVP(obj.Param)
& BOOST_SERIALIZATION_NVP(obj....
Arduino控制RGB三色LED灯实验、程序代码、连线图、仿真 - 创客硬件开发 - ...
...环境:Arduino 1.8.19*/
#define GREEN 9
#define BLUE 10
#define RED 11
int redValue;
int greenValue;
int blueValue;
void setup(){
pinMode(GREEN, OUTPUT);
pinMode(BLUE, OUTPUT);
digitalWrite(RED, HIGH);
digitalWrite(GREEN, LOW);
digitalWr...
【拍照图片处理】Attempt to invoke virtual method 'boolean android.grap...
...n android.graphics.Bitmap.compress(android.graphics.Bitmap$CompressFormat, int, java.io.OutputStream)' on a null object reference
图片大致的处理流程是：先TaifunImage压缩尺寸，在Base64化，调在线api进行识别。
通过调试发现问题是出现在 图片的Resize/Base64...
Attempt to invoke virtual method 'boolean android.graphics.Bitmap.comp...
...n android.graphics.Bitmap.compress(android.graphics.Bitmap$CompressFormat, int, java.io.OutputStream)' on a null object reference
原因：调用 TaifunImage 时给定的图片路径为空导致的。
解决：指定有效的图片路径，或者拍照返回的图片路径，或者图像选...
Why are elementwise additions much faster in separate loops than in a combined loop?
Suppose a1 , b1 , c1 , and d1 point to heap memory and my numerical code has the following core loop.
10 Answers
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How do you display code snippets in MS Word preserving format and syntax highlighting?
...vailable in Office Addins with Office 365 !
Just select the code and click convert it and it converts the code text to formatted color code with line numbers !!!
Bit Rejoice!
Code Format is available here: https://appsource.microsoft.com/en-us/product/office/WA104379501?tab=Overview
...