1銆丆OM錛屽嵆緇勪歡瀵硅薄妯″瀷錛屾槸鍏充簬濡備綍寤虹珛緇勪歡浠ュ強(qiáng)濡備綍閫氳繃緇勪歡寤烘瀯搴旂敤紼嬪簭鐨勪竴涓鑼冦?br />2銆佺粍浠剁殑浼樼偣錛氬簲鐢ㄧ▼搴忓彲闅忔椂闂寸殑嫻侀濊屽彂灞曞彉鍖栵紱瀹氬埗搴旂敤紼嬪簭錛涚粍浠跺簱錛涘垎甯冨紡緇勪歡銆?br />3銆佸緇勪歡鐨勯渶姹傦細(xì)緇勪歡蹇呴』鍔ㄦ佽繛鎺ワ紱蹇呴』闅愯棌鍏跺唴閮ㄥ疄鐜扮粏鑺傘?br />4銆丆OM緇勪歡鏄互Win32鍔ㄦ侀摼鎺ュ簱錛圖LLs錛夋垨鍙墽琛屾枃浠訛紙EXEs錛夌殑褰㈠紡鍙戝竷鐨勫彲鎵ц浠ｇ爜緇勬垚
鐨勩傞伒寰狢OM瑙勮寖緙栧啓鐨勭粍浠跺皢鑳藉婊¤凍瀵圭粍浠跺澶熺殑鎵鏈夐渶姹傘侰OM緇勪歡鏄姩鎬侀摼鎺ョ殑錛孋OM浣?/p>
鐢―LL灝嗙粍浠跺姩鎬侀摼鎺ヨ搗鏉ャ傚浜嶤OM緇勪歡鐨勫皝瑁呮槸寰堝鏄撶殑銆侰OM緇勪歡鎸夌収涓縐嶆爣鍑嗙殑鏂瑰紡鏉ュ
甯冧粬浠殑瀛樺湪銆侰OM緇勪歡鏄竴縐嶇粰鍏朵粬搴旂敤紼嬪簭鎻愪緵闈㈠悜瀵硅薄鐨凙PI鎴栨湇鍔＄殑鏋佸ソ鏂規(guī)硶銆?br />5銆丆OM騫朵笉鏄竴縐嶈綆楁満璇█銆?br />6銆佸皢COM鍚孌LL鐩告彁騫惰鏄笉鍚堥傜殑銆傚疄闄呬笂COM浣跨敤浜咲LL鏉ョ粰緇勪歡鎻愪緵鍔ㄦ侀摼鎺ョ殑鑳藉姏銆?br />7銆丆OM騫朵笉鏄儚Win32API閭ｆ牱鐨勫嚱鏁伴泦錛屽畠鏇翠富瑕佺殑鏄竴縐嶇紪鍐欒兘澶熸寜闈㈠悜瀵硅薄API褰㈠紡鎻愪緵鏈?/p>
鍔＄殑緇勪歡鐨勬柟娉曘?br />8銆丆OM騫朵笉鏄被浼間簬MFC榪欐牱鐨凜++綾誨簱銆侰OM緇欏紑鍙戜漢鍛樻彁渚涚殑鏄竴縐嶅紑鍙戜笌璇█鏃犲叧鐨勭粍浠跺簱
鐨勬柟娉曪紝浣咰OM鏈韓騫舵病鏈夋彁渚涗換浣曞疄鐜般?br />9銆丆OM鍏鋒湁涓涓縐頒綔鏄疌OM搴撶殑API錛屽畠鎻愪緵鐨勬槸瀵規(guī)墍鏈夊鎴峰強(qiáng)緇勪歡閮介潪甯告湁鐢ㄧ殑緇勪歡綆＄悊鏈嶅姟
銆?/p>
////////////////////////////////////////////////////////////////////
絎?绔?鎺ュ彛
1銆佸湪COM涓帴鍙ｅ氨鏄竴鍒囥?br />錛?錛夋帴鍙ｅ彲浠ヤ繚鎶ょ郴緇熷厤棣栧鐣屽彉鍖栫殑褰卞搷銆?br />錛?錛夋帴鍙ｅ彲浠ヤ嬌瀹㈡埛鐢ㄥ悓鏍風(fēng)殑鏂瑰紡鏉ュ鐞嗕笉鍚岀殑緇勪歡銆?br />2銆侊紙1錛塁OM鎺ュ彛鍦–++涓槸鐢ㄧ函鎶借薄鍩虹被瀹炵幇鐨勩?br />聽聽 錛?錛変竴涓狢OM緇勪歡鍙互鎻愪緵澶氫釜鎺ュ彛銆?br />聽聽 錛?錛変竴涓狢++綾誨彲浠ヤ嬌鐢ㄥ緇ф壙鏉ュ疄鐜頒竴涓彲浠ユ彁渚涘涓帴鍙ｇ殑緇勪歡銆?br />3銆佺被騫墮潪緇勪歡銆?br />4銆佹帴鍙ｅ茍闈炴繪槸緇ф壙鐨勩傚鎺ュ彛鐨勭戶鎵垮彧涓嶈繃鏄竴縐嶅疄鐜扮粏鑺傝屽凡銆傞櫎浜嗗彲浠ヤ嬌鐢ㄤ竴涓被鏉ュ疄
鐜板嚑涓笉鍚岀殑鎺ュ彛澶栵紝榪樺彲浠ョ敤鍗曚釜鐨勭被鏉ュ疄鐜版瘡涓涓帴鍙ｅ啀浣跨敤鎸囧悜榪欎簺綾葷殑鎸囬拡銆?br />5銆佺粍浠跺彲浠ユ敮鎸佷換鎰忔暟鐩殑鎺ュ彛銆備負(fù)鏀寔澶氶噸鎺ュ彛錛屽彲浠ヤ嬌鐢ㄥ閲嶇戶鎵褲傛敮鎸佸閲嶆帴鍙ｇ殑緇勪歡
鍙互琚湅浣滄槸鎺ュ彛鐨勯泦鍚堛?br />6銆丆OM鎺ュ彛鐨勪笉鍙樻с佸鎬佷互鍙?qiáng)鎺ュ彛鐟翩壯潃?br />錛?錛変竴鏃﹀叕甯冧簡涓涓帴鍙ｏ紝閭ｄ箞瀹冨皢姘歌繙淇濇寔涓嶅彉銆傚綋瀵圭粍浠惰繘琛屽崌綰ф椂錛屼竴鑸笉浼?xì)淇敼宸叉?/p>
鐨勬帴鍙ｏ紝鑰屾槸鍔犲叆涓浜涙柊鐨勬帴鍙ｃ?br />錛?錛夊鎬佹寚鐨勬槸鍙互鎸夊悓涓縐嶆柟寮忔潵澶勭悊涓嶅悓鐨勫璞°?br />7銆佽櫄鎷熷嚱鏁拌〃錛坴tbl)錛氬寘鍚竴緇勬寚鍚戣櫄鎷熷嚱鏁板疄鐜扮殑鎸囬拡銆?br />瀹氫箟涓涓函鎶借薄鍩虹被涔熷氨鏄畾涔変簡鐩稿簲鐨勫唴瀛樼粨鏋勩備絾姝ゅ唴瀛樺彧鏄湪媧劇敓綾諱腑瀹炵幇姝ゆ娊璞″熀綾繪椂
鎵嶄細(xì)琚垎閰嶃傚綋媧劇敓綾葷戶鎵夸竴涓娊璞″熀綾繪椂錛屽畠?yōu)畣鐟翩壙姝ゅ唴瀛樉l撴瀯銆?br />8銆佸湪COM涓紝瀵逛竴涓粍浠剁殑璁塊棶鍙兘閫氳繃鍑芥暟瀹屾垚錛岃岀粷涓嶈兘鐩存帴閫氳繃鍙橀噺銆?/p>
9銆佹帴鍙ｇ殑鐪熸鐨勫▉鍔涘湪浜庣戶鎵挎鎺ュ彛鐨勬墍鏈夌被鍧囧彲浠ヨ瀹㈡埛鎸夊悓涓鏂瑰紡榪涜澶勭悊銆?/p>
////////////////////////////////////////////////////////////
絎?绔?QueryInterface鍑芥暟
1銆佹帴鍙ｆ煡璇細(xì)
瀹㈡埛鍚岀粍浠剁殑浜や簰閮芥槸閫氳繃涓涓帴鍙ｅ畬鎴愮殑銆傚湪瀹㈡埛鏌ヨ緇勪歡鐨勫叾浠栨帴鍙ｆ椂錛屼篃鏄氳繃鎺ュ彛瀹屾垚
鐨勩傝繖涓帴鍙ｅ氨鏄疘Unknown銆?br />IUnknown鎺ュ彛鐨勫畾涔夊寘鍚湪Win32 SDK涓殑UNKNOWN.H澶存枃浠朵腑銆?br />interface IUnknown
{
聽聽聽 virtual HRESULT _stdcall QueryInterface(const IID& iid,void **ppv) = 0;
聽聽聽 virtual ULONG _stdcall AddRef() = 0;
聽聽聽 virtual ULONG _stdcall Release() = 0;
}
鍦↖Unknown涓畾涔変簡涓涓悕涓篞ueryInterface鐨勫嚱鏁般傚鎴峰彲浠ヨ皟鐢≦ueryInterface鏉ュ喅瀹氱粍浠?/p>
鏄惁鏀寔鏌愪釜鐗瑰畾鐨勬帴鍙ｃ?br />2銆佹墍鏈夌殑COM鎺ュ彛閮介渶瑕佺戶鎵縄Unknown銆?br />3銆佺敱浜庢墍鏈夌殑COM鎺ュ彛閮界戶鎵夸簡IUnknown,姣忎釜鎺ュ彛鐨剉tbl涓殑鍓嶄笁涓嚱鏁伴兘鏄?/p>
QueryInterface,AddRef鍜孯elease銆傝嫢鏌愪釜鎺ュ彛鐨剉tbl涓殑鍓嶄笁涓嚱鏁頒笉鏄繖涓変釜錛岄偅涔堝畠?yōu)畣涓?/p>
鏄竴涓狢OM鎺ュ彛銆傜敱浜庢墍鏈夌殑鎺ュ彛閮芥槸浠嶪Unknown 緇ф壙鐨勶紝鍥犳鎵鏈夌殑鎺ュ彛閮芥敮鎸?/p>
QueryInterface.鍥犳緇勪歡鐨勪換浣曚竴涓帴鍙ｉ兘鍙互琚鎴風(fēng)敤鏉ヨ幏鍙栧畠鎵鏀寔鐨勫叾浠栨帴鍙ｃ?br />4銆侀潪铏氭嫙緇ф壙錛氭敞鎰廔Unknown騫朵笉鏄櫄鎷熷熀綾伙紝鎵浠OM鎺ュ彛騫朵笉鑳芥寜铏氭嫙鏂瑰紡緇ф壙IUnknown錛?/p>
榪欐槸鐢變簬浼?xì)瀵艰嚧涓嶤OM涓嶅吋瀹圭殑vtbl銆傝嫢COM鎺ュ彛鎸夎櫄鎷熸柟寮忕戶鎵縄Unknown錛岄偅涔圕OM鎺ュ彛鐨剉tbl
涓殑澶翠笁涓嚱鏁版寚鍚戠殑灝嗕笉鏄疘Unknown鐨勪笁涓垚鍛樺嚱鏁般?br />5銆佷竴涓猀uertyInterface鍙互鐢ㄤ竴涓畝鍗曠殑if-then-else璇彞瀹炵幇錛屼絾case璇彞鏄棤娉曠敤鐨勶紝鍥?/p>
涓烘帴鍙ｆ爣璇嗙鏄竴涓粨鏋勮屼笉鏄竴涓暟銆?br />6銆佸閲嶇被鍨嬪強(qiáng)綾誨瀷杞崲
7銆丵ueryInterface鐨勮鍒?br />錛?錛塓ueryInterface榪斿洖鐨勬繪槸鍚屼竴IUnknown鎸囬拡銆?br />錛?錛夎嫢瀹㈡埛鏇劇粡鑾峰彇榪囨煇涓帴鍙ｏ紝閭ｄ箞瀹冨皢鎬昏兘鑾峰彇姝ゆ帴鍙ｃ?br />錛?錛夊鎴峰彲浠ュ啀嬈¤幏鍙栧凡緇忔嫢鏈夌殑鎺ュ彛銆?br />錛?錛夊鎴峰彲浠ヤ粠浠諱綍鎺ュ彛榪斿洖鍒拌搗濮嬫帴鍙ｃ?br />錛?錛夎嫢鑳藉浠庢煇涓熷彛鑾峰彇鏌愮壒瀹氭帴鍙ｏ紝閭ｄ箞鍙互浠庝換鎰忔帴鍙ｉ兘灝嗗彲浠ヨ幏鍙栨鎺ュ彛銆?br />8銆佹帴鍙ｇ殑IID鍐沖畾浜嗗畠鐨勭増鏈傚綋鏀瑰彉浜嗕笅鍒楁潯浠朵腑鐨勪換浣曚竴涓椂錛屽氨搴旂粰鏂版帴鍙ｆ寚瀹氭柊鐨処D錛?br />錛?錛夋帴鍙ｄ腑鍑芥暟鐨勬暟鐩?br />錛?錛夋帴鍙ｄ腑鍑芥暟鐨勬槸欏哄簭銆?br />錛?錛夋煇涓嚱鏁扮殑鍙傛暟銆?br />錛?錛夋煇涓嚱鏁板弬鏁扮殑欏哄簭銆?br />錛?錛夋煇涓嚱鏁板弬鏁扮殑綾誨瀷銆?br />錛?錛夊嚱鏁板彲鑳界殑榪斿洖鍊箋?br />錛?錛夊嚱鏁板弬鏁扮殑鍚箟銆?br />錛?錛夋帴鍙ｄ腑鍑芥暟鐨勫惈涔夈?br />9銆侀伩鍏嶈繚鍙嶉殣鍚拰綰︼細(xì)
錛?錛変嬌鎺ュ彛涓嶈鍦ㄥ叾鎴愬憳鍑芥暟鎬庝箞琚皟鐢ㄩ兘鑳芥甯稿伐浣溿?br />錛?錛夊己鍒跺鎴鋒寜涓瀹氱殑鏂瑰紡鏉ヤ嬌鐢ㄦ鎺ュ彛騫跺湪鏂囨。涓皢榪欎竴鐐硅鏄庢竻妤氥?/p>
//////////////////////////////////////////////////////////////////
絎?绔?寮曠敤璁℃暟
1銆佺敓鍛芥湡鎺у埗
IUnknown鐨勫彟澶栦袱涓垚鍛樺嚱鏁癆ddRef鍜孯elease鐨勪綔鐢ㄥ氨鏄粰瀹㈡埛鎻愪緵涓縐嶈瀹冩寚紺轟綍鏃跺鐞嗗畬
涓涓帴鍙ｇ殑鎵嬫銆?br />2銆丄ddRef鍜孯elease瀹炵幇鐨勬槸涓縐嶅悕涓哄紩鐢ㄨ鏁扮殑鍐呭瓨綆＄悊鎶鏈?br />寮曠敤璁℃暟鏄嬌緇勪歡鑳藉鑷繁灝嗚嚜宸卞垹闄ょ殑鏈綆鍗曞悓鏃朵篃鏄晥鐜囨渶楂樼殑鏂規(guī)硶銆?br />COM緇勪歡灝嗙淮鎶や竴涓О鍋氭槸寮曠敤璁℃暟鐨勬暟鍊箋傚綋瀹㈡埛浠庣粍浠跺彇寰椾竴涓帴鍙ｆ椂錛屾寮曠敤璁℃暟鍊煎皢澧?
銆傚綋瀹㈡埛浣跨敤瀹屾煇涓帴鍙ｅ悗錛岀粍浠剁殑寮曠敤璁℃暟鍊煎皢鍑?銆傚綋寮曠敤璁℃暟鍊間負(fù)0鏃訛紝緇勪歡鍗沖彲灝嗚嚜宸變粠
鍐呭瓨涓垹闄ゃ?br />3銆佹紜嬌鐢ㄥ紩鐢ㄨ鏁拌鍒欙細(xì)
錛?錛夊湪榪斿洖涔嬪墠璋冪敤AddRef銆傚浜庨偅浜涜繑鍥炴帴鍙ｆ寚閽堢殑鍑芥暟錛屽湪榪斿洖涔嬪墠搴旂敤鐩稿簲鐨勬寚閽堣皟鐢?/p>
AddRef銆傝繖浜涘嚱鏁板寘鎷琎ueryInterface鍙?qiáng)CreateInstance銆傝繖鏍峰綋瀹㈡埛浠庤繖縐嶅嚱鏁板緱鍒頒竴涓帴鍙?/p>
鍚庯紝瀹冨皢鏃犻渶璋冪敤AddRef銆?br />錛?錛夊湪浣跨敤瀹屾帴鍙ｄ箣鍚庤皟鐢≧elease銆傚湪浣跨敤瀹屾煇涓帴鍙ｄ箣鍚庡簲璋冪敤姝ゆ帴鍙ｇ殑Release鍑芥暟銆?br />錛?錛夊湪璧嬪間箣鍚庤皟鐢ˋddRef銆傚湪灝嗕竴涓帴鍙ｆ寚閽堣祴緇欏彟澶栦竴涓帴鍙ｆ寚閽堟椂錛屽簲璋冪敤AddRef銆傛崲
鍙ヨ瘽璇達(dá)紝鍦ㄥ緩绔嬫帴鍙ｇ殑鍙﹀涓涓紩鐢ㄤ箣鍚庡簲澧炲姞鐩稿簲緇勪歡鐨勫紩鐢ㄨ鏁般?br />4銆佸湪瀹㈡埛鐪嬫潵錛屽紩鐢ㄨ鏁版槸澶勪簬鎺ュ彛綰т笂鑰屼笉鏄粍浠剁駭涓婄殑銆?br />5銆佷負(fù)浠涔堥夋嫨涓烘瘡涓涓帴鍙ｅ崟鐙淮鎶や竴涓紩鐢ㄨ鏁拌屼笉鏄拡瀵規(guī)暣涓粍浠剁淮鎶ゅ紩鐢ㄨ鏁幫紵錛?錛変嬌
紼嬪簭璋冭瘯鏇翠負(fù)鏂逛究錛涳紙2錛夋敮鎸佽祫婧愮殑鎸夐渶鑾峰彇銆?br />6銆丄ddRef&Release鐨勪緥瀛?br />ULONG _stdcall AddRef()
{
聽聽聽 return InterlockedIncrement(&m_cRef);
}
ULONG _stdcall Release()
{
聽聽聽 if(InterlockedDecrement(&m_cRef)
聽聽聽 {
聽聽聽聽聽聽聽 delete this;
聽聽聽聽聽聽聽 return 0;
聽聽聽 }
聽聽聽 return m_cRef;
}
7銆佸綋寤虹珛涓涓柊緇勪歡鏃訛紝搴斿緩绔嬩竴涓姝ょ粍浠剁殑寮曠敤銆傚洜姝ゅ垱寤虹粍浠舵椂錛屽湪灝嗘寚閽堣繑鍥炵粰瀹㈡埛
涔嬪墠錛屽簲璇ュ澶х粍浠剁殑寮曠敤璁℃暟鍊箋傝繖浣跨▼搴忓憳鍙互涓嶅繀鍦ㄨ皟鐢–reateInstance 鎴?/p>
QueryInterface涔嬪悗璁扮潃鍘昏皟鐢ˋddRef銆?br />8銆佸紩鐢ㄨ鏁拌鍒欎紭鍖栵細(xì)
錛?錛夎緭鍑哄弬鏁拌鍒欙細(xì)浠諱綍鍦ㄨ緭鍑哄弬鏁頒腑鎴栦綔璇惰繑鍥炲艱繑鍥炰竴涓柊鐨勬帴鍙ｆ寚閽堢殑鍑芥暟蹇呴』瀵規(guī)鎺?/p>
鍙ｆ寚閽堣皟鐢ˋddRef銆?br />錛?錛夎緭鍏ュ弬鏁拌鍒欙細(xì)瀵逛紶鍏ュ嚱鏁扮殑鎺ュ彛鎸囬拡錛屾棤闇璋冪敤AddRef鍜孯elease錛岃繖鏄洜涓哄嚱鏁扮殑鐢熷懡
鏈熷祵濂楀湪璋冪敤鑰呯殑鐢熷懡鍛ㄦ湡鍐呫?br />錛?錛夎緭鍏?杈撳嚭鍑芥暟瑙勫垯錛氬浜庣敤杈撳叆-杈撳嚭鍙傛暟浼犻掕繘鏉ョ殑鎺ュ彛鎸囬拡錛屽繀欏誨湪緇欏畠璧嬪彟澶栦竴涓?/p>
鎺ュ彛鎸囬拡涔嬪墠璋冪敤鍏禦elease銆傚湪鍑芥暟榪斿洖涔嬪墠錛岃繕蹇呴』瀵硅緭鍑哄弬鏁頒腑鎵淇濆瓨鐨勬帴鍙ｆ寚閽堣皟鐢?/p>
AddRef銆傚錛?br />void ExchangeForCachedPtr( int i, IX **ppIX)
{
聽聽聽 (*ppIX)->Fx();聽 //Do something with in-parameter.
聽聽聽 (*ppIX)->Release();//Release in parameter.
聽聽聽 *ppIX = g_Cache[i]錛?/Get cached pointer.
聽聽聽 (*ppIX)->AddRef();//AddRef pointer.
聽聽聽 (*ppIX)->Fx();//Do something with out-parameter.
}
錛?錛夊眬閮ㄥ彉閲忚鍒欙細(xì)瀵逛簬灞閮ㄥ鍒剁殑鎺ュ彛鎸囬拡錛岀敱浜庡畠浠彧鏄湪鍑芥暟鐨勭敓鍛藉懆鏈熷唴鎵嶅瓨鍦紝鍥?/p>
姝ゆ棤闇璋冪敤AddRef鍜孯elease銆?br />錛?錛夊叏灞鍙橀噺瑙勫垯錛氬浜庝繚瀛樺湪鍏ㄥ眬鍙橀噺涓殑鎺ュ彛鎸囬拡錛屽湪灝嗗叾浼犻掔粰鍙﹀涓涓嚱鏁頒箣鍓嶏紝蹇?/p>
欏昏皟鐢ㄥ叾AddRef銆傜敱浜庢鍙橀噺鏄叏灞鐨勶紝鍥犳浠諱綍鍑芥暟閮藉彲浠ラ氳繃璋冪敤鍏禦elease鏉ョ粓姝㈠叾鐢熷懡
鏈熴傚浜庝繚瀛樺湪鎴愬憳鍙橀噺涓殑鎺ュ彛鎸囬拡錛屼篃搴旀寜姝ょ鏂瑰紡榪涜澶勭悊銆傚洜涓虹被涓殑浠諱綍鎴愬憳鍑芥暟閮?/p>
鍙互鏀瑰彉?gòu)啤涓帴鍙ｆ寚閽堢殑鐘舵併?br />錛?錛変笉鑳界‘瀹氭椂鐨勮鍒欙細(xì)瀵逛簬浠諱綍涓嶈兘紜畾鐨勬儏褰紝閮藉簲璋冪敤AddRef鍜孯elease瀵廣?br />聽
////////////////////////////////////////////////////////////////////
絎?绔?鍔ㄦ侀摼鎺?/p>
1銆佷粠DLL涓緭鍑哄嚱鏁幫細(xì)鐢╡xtern "c"鏍囪銆?br />2銆佸湪浣跨敤VC鏃訛紝鍙互鐢―UMPBIN銆侲XE鏉ュ緱鍒版煇涓狣LL涓墍杈撳嚭鐨勭鍙風(fēng)殑娓呭崟銆傚涓嬮潰鐨勫懡浠わ細(xì)
dumpbin -exports Cmpnt1.dll
3銆佽杞紻LL錛歀oadLibrary浠ヨ瑁呰澆鐨凞LL鐨勫悕縐頒綔涓哄弬鏁板茍榪斿洖涓涓寚鍚戞墍瑁呰澆鐨凞LL鐨勫彞鏌勩?/p>
win32鐨凣etProcAddress鍑芥暟鍙互浣跨敤姝ゅ彞鏌勪互鍙?qiáng)寰呯敤鐨勫嚱鏁扮殑鍚嵖U幫紝鐒跺悗榪斿洖涓涓寚鍚戞鍑芥暟
鐨勬寚閽堛?br />4銆佷嬌鐢―LL瀹炵幇緇勪歡鐨勫師鍥狅細(xì)DLL鍙互鍏變韓瀹冧滑鎵閾懼叆鐨勫簲鐢ㄧ▼搴忕殑鍦板潃絀洪棿銆?/p>
//////////////////////////////////////////////////////////////////////
絎?绔?鍏充簬HRESULT銆丟UID銆佹敞鍐岃〃鍙?qiáng)鍏朵粬缁嗚?/p>
1銆丠RESULT鍊肩殑緇撴瀯錛?br />聽_________________________________________________________
|聽聽聽聽|聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽|聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽|聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽
|聽聽 聽|聽聽聽聽聽聽聽聽聽聽聽聽聽15bits璁懼浠ｇ爜聽 聽聽聽聽聽聽聽聽聽 |聽聽聽聽聽聽 16bits榪斿洖浠ｇ爜聽聽聽聽聽聽聽聽聽聽聽聽聽聽 聽聽聽 聽聽聽聽聽聽聽聽 |
|__|_________________________|______________________________|
聽31 30聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽16聽聽15聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 0聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽
2銆佸父鐢ㄧ殑HRESULT鍊鹼細(xì)
3銆佷竴鑸笉鑳界洿鎺ュ皢HRESULT鍊煎悓鏌愪釜鎴愬姛浠ｇ爜錛堝S_OK錛夎繘琛屾瘮杈冧互鍐沖畾鏌愪釜鍑芥暟鏄惁鎴愬姛涔熶笉
鑳界洿鎺ュ皢鍏跺悓鏌愪釜澶辮觸浠ｇ爜錛堝E_FAIL錛夎繘琛屾瘮杈冧互鍐沖畾鍑芥暟璋冪敤鏄惁澶辮觸銆傚簲璇ヤ嬌鐢?/p>
SECCEEDED鍜孎AILED瀹忋?br />HRESULT hr = CoCreateInstance(...);
if(FAILED(hr))
聽聽聽 return ;
hr = pI->QueryInterface(...);
if(SUCCEEDED(hr))
{
聽聽聽 pIX->Fx();
聽聽聽 pIX->Release();
}
pI->Release();
4銆佸綋鍓嶆墍瀹氫箟鐨勮澶囦唬鐮侊細(xì)
鈥斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺?br />FACILITY_WINDOWS聽聽8
FACILITY_STORAGE聽聽3
FACILITY_SSPI聽聽聽9
FACILITY_RPC聽聽聽1
FACILITY_WIN32聽聽聽7
FACILITY_CONTROL聽聽10
FACILITY_NULL聽聽聽0
FACILITY_ITF聽聽聽4
FACILITY_DISPATCH聽聽2
FACILITY_CERT聽聽聽11
鈥斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺斺?/p>
5銆佸叧浜庡畾涔夎嚜宸辯殑HRESULT鐨勪竴浜涗竴鑸ц鍒欙細(xì)
錛?錛変笉瑕佸皢0X0000鍙?qiáng)IX01FF鑼冨洿鍐呯殑鍊間綔涓鴻繑鍥炰唬鐮併傝繖浜涘兼槸涓篊OM鎵瀹氫箟鐨凢ACILITY_ITF浠?/p>
鐮佽屼繚鐣欑殑銆傚彧鏈夐伒寰繖涓瑙勫垯錛屾墠涓嶈嚧浣跨敤鎴瘋嚜宸卞畾涔夌殑浠ｇ爜鍚孋OM鎵瀹氫箟鐨勪唬鐮佺浉娣鋒穯銆?br />錛?錛変笉瑕佷紶鎾璅ACILITY_ITF閿欒浠ｇ爜銆?br />錛?錛夊敖鍙兘浣跨敤閫氱敤鐨凜OM鎴愬姛鍙?qiáng)澶辫触浠ｇ爜銆?br />錛?錛夐伩鍏嶅畾涔夎嚜宸辯殑HRESULT錛岃屽彲浠ュ湪鍑芥暟涓嬌鐢ㄤ竴涓緭鍑哄弬鏁般?br />6銆佺敤MAKE_HRESULT瀹忔潵瀹氫箟涓涓狧RESULT鍊鹼紝姝ゅ畯鍙牴鎹墍鎻愪緵鐨勪弗閲嶇駭鍒佽澶囦唬鐮佸強(qiáng)榪斿洖浠?/p>
鐮佺敓鎴愪竴涓狧RESULT鍊箋傚錛?br />MAKE_HRESULT錛圫EVERITY_ERROR錛孎ACILITY_ITF錛?00錛夛紱
7銆丟UID鏄嫳鏂嘒lobally Unique Identifier(鍏ㄥ眬鍞竴鏍囪瘑絎︼級鐨勯瀛楁瘝緙╁啓銆侷ID鏄竴涓?28姣?/p>
鐗癸紙16錛夊瓧鑺傜殑涓涓狦UID緇撴瀯銆?br />8銆佺敓鎴怗UID 錛歎UIDGEN.EXE鍜孏UIDGEN.EXE
9銆丟UID鐨勬瘮杈冿細(xì)鎿嶄綔絎?=;絳変環(huán)鍑芥暟IsEqualGUID,IsEqualIID,IsEqualCLSID銆?br />10銆佸皢GUID浣滀負(fù)緇勪歡鏍囪瘑絎?br />11銆佺敱浜庝竴涓狦UID鍊煎崰鐢ㄤ簡16涓瓧鑺傦紝鍥犳涓鑸笉鐢ㄥ間紶閫扜UID鍙傛暟銆傝屽ぇ閲忎嬌鐢ㄧ殑鏄寜寮曠敤浼?/p>
閫掋?br />12銆丆OM鍙嬌鐢ㄤ簡娉ㄥ唽琛ㄧ殑涓涓垎鏀細(xì)HKEY_CLASSES_ROOT銆?br />13銆佹敞鍐岃〃CLSID鏄竴涓叿鏈夊涓嬫牸寮忕殑涓詫細(xì)
{********-****-****-****-************}
14銆丆LSID鍏抽敭瀛楃殑瀛愬叧閿瓧InprocServer32鍏抽敭瀛楃殑緙虹渷鍊兼槸緇勪歡鎵鍦ㄧ殑DLL鏂囦歡鍚嶇О銆?br />15銆佷竴浜涚壒孌婂叧閿瓧錛?br />錛?錛堿ppID錛氭鍏抽敭瀛椾笅鐨勫瓙鍏抽敭瀛楃殑浣滅敤鏄皢鏌愪釜APPID錛堝簲鐢ㄧ▼搴廔D錛夐殣灝勬垚鏌愪釜榪滅▼鏈嶅姟
鍣ㄥ悕縐般傚垎甯冨紡COM灝嗙敤鍒版鍏抽敭瀛椼?br />錛?錛夌粍瑙佺被鍒細(xì)娉ㄥ唽琛ㄧ殑榪欎竴鍒嗘敮鍙互灝咰ATID錛堢粍浠剁被鍒獻(xiàn)D錛夋槧灝勬垚鏌愪釜鐗瑰畾鐨勭粍浠剁被鍒?br />錛?錛塈nterface錛氱敤浜庡皢IID鏄犲皠鎴愪笌鏌愪釜鎺ュ彛鐩稿叧鐨勪俊鎭?br />錛?錛塋icenses錛氫繚瀛樻巿鏉冧嬌鐢–OM緇勪歡鐨勪竴浜涜鍙俊鎭?br />錛?錛塗ypeLib錛氱被鍨嬪簱鍏抽敭瀛楁墍淇濆瓨鐨勬槸鍏充簬鎺ュ彛鎴愬憳鍑芥暟鎵鐢ㄥ弬鏁扮殑淇℃伅絳夈?br />16銆丳rogID鍛藉悕綰﹀畾錛?br /><Program>.<component>.<version>
17銆佷粠ProgID鍒癈LSID鐨勮漿鎹細(xì)COM搴撳嚱鏁幫細(xì)CLSIDFromProgID鍜孭rogIdFromCLSID:
CLSID clsid;
CLSIDFromProgID("****.****.****",&clsid);
18銆佽嚜娉ㄥ唽錛欴LL涓瀹氳杈撳嚭涓嬭竟涓や釜鍑芥暟錛?br />STDAPI DllRegisterServer();
STDAPI DllUnregisterServer();
鐢ㄦ埛鍙互浣跨敤紼嬪簭REGSVR32.EXE鏉ユ敞鍐屾煇涓粍浠訛紝瀹冨疄闄呬笂鏄氳繃涓婅堪鍑芥暟鏉ュ畬鎴愮粍浠剁殑娉ㄥ唽鐨?
銆?br />19銆佺粍浠剁被鍒嬌寮鍙戜漢鍛樿兘澶熶嬌寮鍙戜漢鍛樻棤闇鍒涘緩緇勪歡瀹炰緥灝辮兘鍐沖畾瀹冩槸鍚︾壒宸ユ墍闇鎺ュ彛銆備竴涓?/p>
緇勪歡綾誨埆瀹為檯涓婂氨鏄竴涓帴鍙ｉ泦鍚堬紝璇ラ泦鍚堝皢琚垎閰嶇粰涓涓狦UID錛屾GUID姝ゆ椂琚О鍋氭槸CATID銆?/p>
瀵逛簬鏌愪釜緇勪歡鑰岃█錛岃嫢瀹冨疄鐜頒簡鏌愪釜緇勪歡綾誨埆鐨勬墍鏈夋帴鍙ｏ紝閭ｄ箞瀹冨彲浠ュ皢鍏舵敞鍐屾垚璇ョ粍浠剁被鍒殑
涓涓垚鍛樸傝繖鏍鳳紝瀹㈡埛灝辮兘澶熼氳繃浠庢敞鍐岃〃涓夋嫨鍙睘浜庢煇涓壒瀹氱粍浠剁被鍒殑緇勪歡鑰屽噯紜壘鍒板畠
鎵闇鐨勭粍浠躲?br />20銆佺粍浠剁被鍒殑鐢ㄩ旓細(xì)鎸囧畾鏌愪釜緇勪歡蹇呴』瀹炵幇鐨勬帴鍙ｉ泦鍚堬紱鐢ㄤ簬鎸囧畾緇勪歡闇瑕佸叾瀹㈡埛鎻愪緵鐨勬帴鍙?/p>
闆嗗悎銆?br />22銆佸湪浣跨敤COM搴撲腑鐨勫叾浠栧嚱鏁幫紙闄oBuildVersion澶栵紝姝ゅ嚱鏁板皢榪斿洖COM搴撶殑鐗堟湰鍙鳳級涔嬪墠錛岃繘
紼嬪繀欏誨厛璋冪敤CoInitialize鏉ュ垵濮嬪寲COM搴撳嚱鏁般傚綋榪涚▼涓嶅啀闇瑕佷嬌鐢–OM搴撳嚱鏁版椂錛屽繀欏昏皟鐢?/p>
CoUninitialize銆傚姣忎竴涓繘紼嬶紝COM搴撳嚱鏁板彧闇鍒濆鍖栦竴嬈°傝繖騫朵笉鏄涓嶈兘澶氭璋冪敤
CoInitailize錛屼絾闇淇濊瘉姣忎竴涓狢oInitialize閮芥湁涓涓浉搴旂殑CoUnoinitialize璋冪敤銆傚綋榪涚▼宸?/p>
緇忚皟鐢ㄨ繃CoInitialize鍚庯紝鍐嶆璋冪敤姝ゅ嚱鏁版墍寰楀埌鐨勮繑鍥炲煎皢鏄疭_FALSE鑰屼笉鍐嶆槸S_OK.
23銆丱LE鏄緩绔嬪湪COM鍩虹涔嬩笂鐨勶紝瀹冨鍔犱簡瀵圭被鍨嬪簱銆佸壀璐存澘銆佹嫋鏀俱丄ctiveX鏂囨。銆佽嚜鍔ㄥ寲浠?/p>
鍙?qiáng)ActiveX鎺т歡鐨勬敮鎸併傚湪OLE搴撲腑鍖呭惈瀵硅繖浜涚壒鎬х殑棰濆鐨勬敮鎸併傚湪闇瑕佷嬌鐢ㄨ繖浜涚壒鎬ф椂錛屽簲璋?/p>
鐢∣leInitailize鍙?qiáng)OleUninitialize,鑰屼笉鏄疌oInitailize鍜?CoUninitialize銆侽le*鍑芥暟灝嗚皟鐢?/p>
Co*鍑芥暟銆備絾鑻ョ▼搴忎腑娌℃湁鐢ㄥ埌閭ｄ簺棰濆鐨勫姛鑳斤紝浣跨敤Ole*灝嗕細(xì)閫犳垚璧勬簮鐨勬氮璐廣?br />24銆丆OM涓垎閰嶅拰閲婃斁鍐呭瓨鐨勬爣鍑嗘柟娉曪細(xì)浠誨姟鍐呭瓨鍒嗛厤鍣ㄣ備嬌鐢ㄦ鍒嗛厤鍣紝緇勪歡鍙互緇欏鎴鋒彁渚?/p>
涓鍧楀彲浠ョ敱瀹㈡埛鍒犻櫎鐨勫唴瀛樸傚彲鍦ㄥ綰跨▼搴旂敤紼嬪簭涓嬌鐢ㄣ?br />涓浜涙柟渚跨殑鍑芥暟錛?br />void聽 *CoTaskMemAlloc(
ULONG cb聽 //size in bytes of block to be allocated
);
void CoTaskMemFree(
void *pv聽 //pointer to memory block to be freed
);
25銆丼tringFromGUID2鍙互灝嗘煇涓狦UID杞崲鎴愪竴涓瓧絎︿覆錛?br />wchar_t szCLSID[39];
int r = ::StringFromGUID2(CLSID_Component1,szCLSID,39);
聽浼犵粰StringFromGUID2鐨勫弬鏁版槸涓涓猆nicode涓詫紙鍗充竴涓瀛楃wchar_t綾誨瀷鐨勬暟緇勮屼笉鏄痗har綾?/p>
鍨嬬殑瀛楃鏁扮粍錛夈傚湪闈濽nicode鐨勭郴緇熶腑錛岄渶瑕佸皢緇撴灉杞寲涓哄崟瀛楄妭瀛楃(char)銆備負(fù)姝わ紝鍙互浣?/p>
鐢ˋNSI鐨剋cstombs鍑芥暟濡備笅錛?br />#ifndef _UNICODE
char szCLSID_single[39];
wcstombs(szCLSID_single,szCLSID,39);
#end if
26銆?br />----------------------------------------------------------------------------
鍑芥暟聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 鐢ㄩ?br />-----------------------------------------------------------------------------
StringFromCLSID聽聽聽聽聽聽 灝咰LSID杞寲鎴愭枃鏈覆
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StringFromIID聽聽聽聽聽聽聽聽 灝咺ID杞寲鎴愭枃鏈覆
------------------------------------------------------------------------------
StringFromGUID2聽聽聽聽聽聽 灝咷UID杞寲鎴愭枃鏈覆銆傛涓插皢琚瓨鏀懼湪璋冪敤鑰呮墍鍒嗛厤鐨勭紦鍐插尯涓?br />------------------------------------------------------------------------------
CLSIDFromString聽聽聽聽聽聽 灝嗕竴涓枃鏈覆杞寲鎴怌LSID
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IIDFromString聽聽聽聽聽聽聽聽 灝嗕竴涓枃鏈覆杞寲鎴怚ID
------------------------------------------------------------------------------
]]>