.

UG二次开发模板

目 录

第一章 技巧规则 ····························································································································· (2) 第二章 函数模板 ····························································································································· (4) 第三章 功能模板 ··························································································································· (11) 第四章 udop····································································································································· (24)

Word专业资料

.

注：连接:Ctrl+单击鼠标左键

第一章 技巧规则

1，存原则：

【规则1】用malloc或new申请存之后，应该立即检查指针值是否为NULL。 防止使用指针值为NULL的存。

【规则2】不要忘记为数组和动态存赋初值。防止将未被初始化的存作为右 值使用。

【规则3】避免数组或指针的下标越界，特别要当心发生“多1”或者“少1” 操作。

【规则4】动态存的申请与释放必须配对，防止存泄漏。

【规则5】用free或delete释放了存之后，立即将指针设置为NULL，防止产 生“野指针”。 2，

Word专业资料

.

数组要么在静态存储区被创建（如全局数组），要么在栈上被创建。数组名对应着（而不是指向）一块存，其地址与容量在生命期保持不变，只有数组的容可以改变。 指针可以随时指向任意类型的存块，它的特征是“可变”，所以我们常用指针来操作动态存。指针远比数组灵活，但也更危险。

注意当数组作为函数的参数进行传递时，该数组自动退化为同类型的指针。

new/delete的功能完全覆盖了malloc/free，为什么C++不把malloc/free淘 汰出局呢？

这是因为C++程序经常要调用C函数，而C程序只能用malloc/free管理动态存。

2，分配空间 double (*point)[3];

point = new double[count][3];

delete[]point;//正确的用法

/*delete point;//错误的用法＝delete point[0]*/ 3，

UF_MODL_update();//使用UF_MODL_edit时用来刷新

4 UF_UI_ONT_refresh ();//刷新导航器

Word专业资料