原文
//示例代碼:
interface IFont
{
IFont createFontWithSize(int size);
}
//主代碼
import common;
class TTFFont : IFont
{
IFont createFontWithSize(int size){return new TTFFont;}
}
export extern(System) IFont newFont()
{
auto ret = new TTFFont();
GC.addRoot(ret);
return ret;
}
//DLL代碼:
import common;
Runtime.initialize();
IFont function() newFont;
newFont = loadSymbol("newFont");
IFont myFont = newFont();
IFont otherFont = myFont.createFontWithSize(32);
//一段時間後`垃集`
// mydll.d
extern(C) {
void gc_setProxy(void* p);
void gc_clrProxy();
}
export void MyDLL_Initialize(void* gc) {
gc_setProxy(gc);
}
export void MyDLL_Terminate() {
gc_clrProxy();
}
// main.d
extern (C) {
void* gc_getProxy();
}
void main() {
MyDLL_Initialize(gc_getProxy());
//用DLL共享本程序的GC
scope(exit) MyDLL_Terminate();
/*幹活...*/
}