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]]> - 鍓栨瀽Windows娑堟伅澶勭悊鏈哄埗http://www.shnenglu.com/deane/archive/2010/01/07/105099.html鏉庨槼鏉庨槼Thu, 07 Jan 2010 08:17:00 GMThttp://www.shnenglu.com/deane/archive/2010/01/07/105099.htmlhttp://www.shnenglu.com/deane/comments/105099.htmlhttp://www.shnenglu.com/deane/archive/2010/01/07/105099.html#Feedback0http://www.shnenglu.com/deane/comments/commentRss/105099.htmlhttp://www.shnenglu.com/deane/services/trackbacks/105099.html
鍓嶄竴孌碉紝甯漢鍐欎簡涓皬鎺т歡錛屽張娓╀範浜嗕竴閬峎indows娑堟伅澶勭悊鏈哄埗錛岀幇鍦ㄦ妸涓浜涚煡璇嗙偣鎬葷粨鍑烘潵錛屼緵澶у鍙傝?
1.紿楀彛
Windows紼嬪簭鏄敱涓緋誨垪鐨勭獥鍙f瀯鎴愮殑錛屾瘡涓獥鍙i兘鏈夎嚜宸辯殑紿楀彛榪囩▼錛岀獥鍙h繃紼嬪氨鏄竴涓嫢鏈夋湁鍥哄畾 Signature 鐨?C鍑芥暟錛屽叿浣撴牸寮忓涓嬶細
LRESULT CALLBACK WindowProc(HWND hwnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam
);
紿楀彛綾誨瀷錛?br> 鍙噸鍙犵獥鍙?Overlapped Window)錛?br> 寮瑰嚭紿楀彛(Pop-up Window)錛?br> 瀛愮獥鍙?Child Window)
紿楀彛涔嬮棿鐨勫叧緋? 鐖跺瓙鍏崇郴錛屾嫢鏈夊叧緋伙紝鍓嶅悗鍏崇郴銆?br>
2.綰跨▼
涓涓繘紼嬭嚦灝戞嫢鏈変竴涓嚎紼嬶紝縐頒負涓葷嚎紼嬶紝濡傛灉涓涓嚎紼嬪垱寤轟簡紿楀彛錛屾嫢鏈塆UI璧勬簮錛岄偅涔堜篃縐拌綰跨▼涓篏UI綰跨▼,鍚﹀垯灝變負宸ヤ綔綰跨▼銆傜獥鍙f槸鐢辯嚎紼嬪垱寤虹殑錛?br> 鍒涘緩紿楀彛鐨勭嚎紼嬪氨鎷ユ湁璇ョ獥鍙c傝繖縐嶇嚎紼嬫嫢鏈夊叧緋葷殑姒傚康瀵圭獥鍙f湁閲嶈鐨勬剰涔夛細寤虹珛紿楀彛鐨勭嚎紼嬪繀欏繪槸涓虹獥鍙e鐞嗘墍鏈夋秷鎭殑綰跨▼銆備負浜嗕嬌榪欎釜姒傚康鏇村姞鏄?br> 紜叿浣擄紝鍙互鎯沖儚涓涓嚎紼嬪緩绔嬩簡涓涓獥鍙o紝鐒跺悗灝辯粨鏉熶簡銆傚湪榪欑鎯呭喌涓嬶紝紿楀彛涓嶄細鏀跺埌涓涓猈M_DESTROY鎴朩M_NCDESTROY娑堟伅錛屽洜涓虹嚎紼嬪凡緇忕粨鏉燂紝涓嶅彲
鑳借鐢ㄦ潵浣跨獥鍙f帴鏀跺拰澶勭悊榪欎簺娑堟伅銆傛瘡涓嚎紼嬶紝濡傛灉瀹冭嚦灝戝緩绔嬩簡涓涓獥鍙o紝閮界敱緋葷粺瀵瑰畠鍒嗛厤涓涓秷鎭槦鍒椼傝繖涓槦鍒楃敤浜庣獥鍙f秷鎭殑媧鵑?dispatch)銆?br> 涓轟簡浣跨獥鍙f帴鏀惰繖浜涙秷鎭紝綰跨▼蹇呴』鏈夊畠鑷繁鐨勬秷鎭驚鐜紝娑堟伅寰幆涓鑸涓嬶細
MSG msg;
while( GetMessage(&msg, NULL, 0, 0) )
{
TranslateMessage (&msg);
DispatchMessage (&msg);
}
搴旂敤紼嬪簭涓嶆柇鐨勪粠娑堟伅闃熷垪涓幏鍙栨秷鎭?鐒跺悗緋葷粺閫氳繃DispatchMessage鍑芥暟鍒嗘淳娑堟伅鍒扮浉搴旂獥鍙g殑紿楀彛榪囩▼錛屼嬌寰楁秷鎭緱鍒板鐞嗐傚綋鑾峰彇鍒癢M_QUIT娑堟伅鏃訛紝
GetMessage榪斿洖0錛屽驚鐜粨鏉熴?br>
3.娑堟伅
娑堟伅錛屽氨鏄寚Windows鍙戝嚭鐨勪竴涓氱煡錛屽憡璇夊簲鐢ㄧ▼搴忔煇涓簨鎯呭彂鐢熶簡銆備緥濡傦紝鍗曞嚮榧犳爣銆佹敼鍙樼獥鍙e昂瀵搞佹寜涓嬮敭鐩樹笂鐨勪竴涓敭閮戒細浣縒indows鍙戦佷竴涓秷鎭?br> 緇欏簲鐢ㄧ▼搴忥紝瀹冭瀹氫箟涓猴細
typedef struct {
HWND hwnd; //紿楀彛鍙ユ焺, 鍙戠敓鍦ㄥ摢涓獥鍙d笂
UINT message; //娑堟伅鏍囪瘑鍙?( WM_MOUSEMOVE, WM_LBUTTONDOWN, ... )
WPARAM wParam; //娑堟伅鍙傛暟1
LPARAM lParam; //娑堟伅鍙傛暟2
DWORD time;
POINT pt;
} MSG, *PMSG;
涓涓秷鎭粨鏋勪綋鍖呭惈浜嗚浜嬩歡 鎵鏈夊畬澶囦俊鎭紝褰撳簲鐢ㄧ▼搴忔敹鍒拌娑堟伅鏃訛紝灝卞彲浠ュ仛鍑虹浉搴斿鐞嗕簡銆?br>
娑堟伅鍒嗙被
<1>.闃熷垪娑堟伅鍜岄潪闃熷垪娑堟伅
浠庢秷鎭殑鍙戦侀斿緞涓婄湅錛屾秷鎭垎涓ょ錛氶槦鍒楁秷鎭拰闈為槦鍒楁秷鎭?br> 闃熷垪娑堟伅閫佸埌緋葷粺娑堟伅闃熷垪錛岀劧鍚庡埌綰跨▼娑堟伅闃熷垪錛涢潪闃熷垪娑堟伅鐩存帴閫佺粰鐩殑紿楀彛榪囩▼銆?/p>
榪欓噷錛屽娑堟伅闃熷垪闃愯堪濡備笅錛?br> Windows緇存姢涓涓郴緇熸秷鎭槦鍒?System message queue)錛屾瘡涓狦UI綰跨▼鏈変竴涓嚎紼嬫秷鎭槦鍒?Thread message queue)銆傞紶鏍囥侀敭鐩樹簨浠剁敱榧犳爣鎴栭敭鐩橀┍鍔?br> 紼嬪簭杞崲鎴愯緭鍏ユ秷鎭茍鎶婃秷鎭斁榪涚郴緇熸秷鎭槦鍒楋紝渚嬪WM_MOUSEMOVE銆乄M_LBUTTONUP銆乄M_KEYDOWN銆乄M_CHAR絳夌瓑銆俉indows姣忔浠庣郴緇熸秷鎭槦鍒楃Щ璧頒竴涓?br> 娑堟伅錛岀‘瀹氬畠鏄佺粰鍝釜紿楀彛鐨勫拰榪欎釜紿楀彛鏄敱鍝釜綰跨▼鍒涘緩鐨勶紝鐒跺悗錛屾妸瀹冩斁榪涚獥鍙e垱寤虹嚎紼嬬殑綰跨▼娑堟伅闃熷垪銆傜嚎紼嬫秷鎭槦鍒楁帴鏀墮佺粰璇ョ嚎紼嬫墍鍒涘緩紿楀彛
鐨勬秷鎭傜嚎紼嬩粠娑堟伅闃熷垪鍙栧嚭娑堟伅錛岄氳繃Windows鎶婂畠閫佺粰閫傚綋鐨勭獥鍙h繃紼嬫潵澶勭悊銆?br>
闄や簡閿洏銆侀紶鏍囨秷鎭互澶栵紝闃熷垪娑堟伅榪樻湁WM_PAINT銆乄M_TIMER鍜學M_QUIT銆傝繖浜涢槦鍒楁秷鎭互澶栫殑緇濆ぇ澶氭暟娑堟伅鏄潪闃熷垪娑堟伅銆?/p>
<2>.緋葷粺娑堟伅鍜屽簲鐢ㄧ▼搴忔秷鎭?
浠庢秷鎭殑鏉ユ簮鏉ョ湅錛屽彲浠ュ垎涓猴細緋葷粺瀹氫箟鐨勬秷鎭拰搴旂敤紼嬪簭瀹氫箟鐨勬秷鎭?/p>
緋葷粺娑堟伅ID鐨勮寖鍥存槸浠?鍒癢M_USER-1錛屾垨0X80000鍒?XBFFFF錛涘簲鐢ㄧ▼搴忔秷鎭粠WM_USER(0X0400)鍒?X7FFF錛屾垨0XC000鍒?XFFFF錛沇M_USER鍒?X7FFF鑼冨洿鐨勬秷鎭?br> 鐢卞簲鐢ㄧ▼搴忚嚜宸變嬌鐢紱0XC000鍒?XFFFF鑼冨洿鐨勬秷鎭敤鏉ュ拰鍏朵粬搴旂敤紼嬪簭閫氫俊錛屼負浜咺D鐨勫敮涓鎬э紝浣跨敤::RegisterWindowMessage鏉ュ緱鍒拌鑼冨洿鐨勬秷鎭疘D銆?br>
<3>.紿楀彛娑堟伅錛屽懡浠ゆ秷鎭紝鎺т歡閫氱煡娑堟伅
鏍規嵁澶勭悊榪囩▼鐨勪笉鍚?鍙互鍒嗕負涓夌被錛氱獥鍙f秷鎭紝鍛戒護娑堟伅錛屾帶浠墮氱煡娑堟伅銆?br>
(1).紿楀彛娑堟伅
涓鑸互WM_寮澶達紝濡俉M_CREATE, WM_SIZE, WM_MOUSEMOVE絳夋爣鍑嗙殑Windows娑堟伅, 鐢ㄤ簬紿楀彛鐩稿叧鐨勪簨浠墮氱煡錛岀獥鍙f秷鎭皢鐢辯郴緇熷垎閰嶅埌璇ョ獥鍙g殑紿楀彛榪囩▼澶勭悊銆?br> (2).鍛戒護娑堟伅 (WM_COMMAND)
涓縐嶇壒孌婄殑紿楀彛娑堟伅錛屽畠浠庝竴涓獥鍙e彂閫佸埌鍙︿竴涓獥鍙d互澶勭悊鏉ヨ嚜鐢ㄦ埛鐨勮姹傦紝閫氬父鏄粠瀛愮獥鍙e彂閫佸埌鐖剁獥鍙o紝渚嬪錛岀偣鍑繪寜閽椂錛屾寜閽殑鐖剁獥鍙d細鏀跺埌
WM_COMMAND娑堟伅錛岀敤浠ラ氱煡鐖剁獥鍙f寜閽鐐瑰嚮錛岀粡嫻嬭瘯錛氬瓙紿楀彛鍚戠埗紿楀彛鍙戦乄M_COMMAND娑堟伅錛屾垨鑰呯О涓虹埗紿楀彛浼氭敹鍒癢M_COMMAND娑堟伅錛屾搷浣滅郴緇熷茍涓嶆槸
閫氳繃灝哤M_COMMAND娑堟伅鏀懼叆鍒扮埗紿楀彛鐨勬秷鎭槦鍒椾腑鍘伙紝鑰屾槸鐩存帴璋冪敤浜嗙埗紿楀彛鐨勭獥鍙h繃紼嬶紝浠?WM_COMMAND 涓烘秷鎭爣璇嗗弬鏁?UINT uMsg)錛屽疄鐜拌繖涓姛鑳界殑
API鍑芥暟姝f槸: LRESULT DispatchMessage(const MSG *lpmsg);
(3).鎺т歡閫氱煡娑堟伅
WM_NOTIFY娑堟伅錛屽綋鐢ㄦ埛涓庢帶浠朵氦浜?Edit, Button...)鏃訛紝閫氱煡娑堟伅浼氫粠鎺т歡紿楀彛鍙戦佸埌鐖剁獥鍙o紝榪欑娑堟伅鐨勭洰鐨勪笉鏄負浜嗗鐞嗙敤鎴峰懡浠わ紝鑰屾槸涓轟簡璁╃埗紿?br> 鍙h兘澶熼傛椂鐨勬敼鍙樻帶浠躲?br>
4.嫻嬭瘯
<1>.嫻嬭瘯浠g爜:
娑堟伅寰幆涓紝灝嗕粠娑堟伅闃熷垪涓彇鍑虹殑娑堟伅閫愪竴鎵撳嵃鍑烘潵錛?br>
while(GetMessage(&msg, NULL, 0, 0))

{
char buf[1024];
sprintf_s(buf, 1024, "hWnd:%d uMsg: %d WParam: %d LParam: %d\n",
msg.hwnd, msg.message, msg.wParam, msg.lParam);
std::cout<<buf;
TranslateMessage(&msg);
DispatchMessage(&msg);
}

鍦ㄧ獥鍙h繃紼嬩腑錛屽鏋滄敹鍒?WM_COMMAND 娑堟伅錛屽氨鍦ㄧ獥鍙d笂杈撳叆鏉ャ?br>
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)

{
switch (message)

{
case WM_COMMAND:
HDhdc = GetDC (hwnd) ;
SelectObject (hdc, GetStockObject (SYSTEM_FIXED_FONT)) ;
TextOut(hdc, 24 * cxChar, cyChar * (rect.bottom / cyChar - 1),
szBuffer,
wsprintf(szBuffer, szFormat,
TEXT ("WM_COMMAND"),
HIWORD(wParam), LOWORD(wParam),
HIWORD(lParam), LOWORD(lParam))
);

ReleaseDC (hwnd, hdc) ;
ValidateRect (hwnd, &rect) ;
break ;






}

return DefWindowProc (hwnd, message, wParam, lParam) ;
}


<2>.榪愯緇撴灉
涓涓獥鍙o紝紿楀彛涓婃湁涓涓寜閽瓙紿楀彛錛岀劧鍚庤繕鏈変竴涓帶鍒跺彴錛岃緭鍑烘秷鎭驚鐜腑鐨勬瘡鏉℃秷鎭紝褰撶埗紿楀彛鏀跺埌 WM_COMMAND 娑堟伅鏃訛紝
浼氬湪灞忓箷涓婅緭鍑恒?br>

(1). 褰撻紶鏍囧湪鐖剁獥鍙d笂縐誨姩鏃訛細

鍙鐖剁獥鍙?hWnd: 461982錛寀Msg : 521 ( WM_MOUSEMOVE )錛屼粠綰跨▼娑堟伅闃熷垪涓彇鍑虹殑銆?br>
(2). 褰撻紶鏍囧湪鎸夐挳瀛愮獥鍙d笂縐誨姩鏃訛細

鍙鎸夐挳 hWnd: 462118錛寀Msg : 521 ( WM_MOUSEMOVE)錛屼粠綰跨▼娑堟伅闃熷垪涓彇鍑虹殑銆?br>
(3). 褰撻紶鏍囧湪鐖剁獥鍙d笂鐐瑰嚮鏃訛細

鐖剁獥鍙f敹鍒頒簡 513(WM_LBUTTONDOWN), 514(WM_LBUTTONUP) 娑堟伅錛屼粠綰跨▼娑堟伅闃熷垪涓彇鍑虹殑銆?br>
(4). 褰撻紶鏍囧湪鎸夐挳紿楀彛涓婄偣鍑繪椂錛?br>

鎸夐挳紿楀彛浠庣嚎紼嬬殑娑堟伅闃熷垪涓彇鍑轟簡 513(WM_LBUTTONDOWN), 514(WM_LBUTTONUP) 娑堟伅錛岀埗紿楀彛鏀跺埌浜哤M_COMMAND
娑堟伅錛孴extOut 緇樺埗鍑?WM_COMMAND 鏂囨湰銆?br>
鎴戝湪 WM_COMMAND 鐨勬秷鎭鐞嗚鍙ュ鎵撴湁鏂偣錛岀湅涓嬪浘:

鍙錛岀獥鍙h繃紼嬫槸琚郴緇熻皟鐢ㄧ殑錛岃皟鐢ㄦ椂緋葷粺浼犲叆鐨勫弬鏁板間負錛?br> hwnd: 0x00070c9e錛屽崄榪涘埗灝辨槸461982錛岀埗紿楀彛鍙ユ焺錛?br> message: 273 (WM_COMMAND)
wParam: ...
lParam: ...
鍏蜂綋鏄疻inMain涓殑鍝竴涓嚱鏁頒腑鏈鍚庤皟鐢ㄤ簡 紿楀彛榪囩▼ WndProc 鍛紝瑙佷笅鍥撅細

鍘熸潵鏄湪 DispatchMessage 鍑芥暟涓紝鍐嶇湅鐪嬪弬鏁扮殑鍊鹼細
msg.hwnd: 0x00070d26錛屽崄榪涘埗鏄?62118錛屾槸鎸夐挳紿楀彛鐨勫彞鏌?
msg.message: 514 ( WM_LBUTTONUP )
鍝~~~錛屽師鏉ユ槸鎿嶄綔緋葷粺鍦ㄤ粠璇ョ嚎紼嬬殑娑堟伅闃熷垪涓彇鍑烘寜閽殑 WM_LBUTTONUP (榧犳爣宸﹂敭閲婃斁) 娑堟伅鍚庯紝璋冪敤
DispatchMessage 鍒嗘淳娑堟伅錛孌ispatchMessage 浼氬厛灝?WM_LBUTTONUP 娑堟伅鍒嗘淳鍒版寜閽殑紿楀彛榪囩▼(緋葷粺榛樿鏈?錛?br> 榪欓噷鐨勫垎媧懼埌鎸夐挳鐨勭獥鍙h繃紼嬪氨鏄皟鐢ㄤ亢灝辯殑紿楀彛榪囩▼錛岀劧鍚庡張浠?鎸夐挳鐨勭埗紿楀彛鐨勫彞鏌勪負 紿楀彛榪囩▼鐨勭涓涓?br> 鍙傛暟錛?WM_COMMAND 涓虹獥鍙h繃紼嬬殑絎簩涓弬鏁?璋冪敤浜?nbsp;鐖剁獥鍙g殑紿楀彛榪囩▼錛屼篃灝辨槸灝?WM_COMMAND
娑堟伅鍒嗗彂鍒頒簡鐖剁獥鍙o紝浠庤屼嬌鐖剁獥鍙e緱鍒頒簡閫氱煡銆傝繖浜涳紝閮芥槸 Windows 鏉ュ畬鎴愮殑錛屽簲鐢ㄧ▼搴忓彧闇瑕佸湪鐩稿簲鐨勭獥鍙?br> 榪囩▼涓鐞嗙浉搴旂殑娑堟伅銆?br>
浠庝笂闈紝鎴戜滑榪樺彲浠ョ湅鍑猴紝WM_COMMAND 鏄潪闃熷垪娑堟伅錛岀洿鎺ュ垎媧懼埌鐩殑紿楀彛榪囩▼錛岃屼笉鏄斁鍏ュ埌娑堟伅闃熷垪涓紝
璁╂秷鎭驚鐜幓鍙栥?br>
鎬葷粨:
綆鑰岃█涔嬶紝 鏍囧噯Windows娑堟伅鍙戦佸埌浜х敓紿楀彛錛岄氱煡娑堟伅(WM_COMMAND, WM_NOTIFY)鍙戦佸埌鐖剁獥鍙o紝榪欐槸Windows
鐨勬爣鍑嗘秷鎭鐞嗚繃紼嬶紝MFC瀵?Window API 榪涜浜嗗皝瑁咃紝鏈夎嚜宸辯殑涓濂楁秷鎭鐞嗘祦紼嬶紝 娑堟伅欏虹潃涓鏉¤礬寰勬祦鍔紝闇瑕?br> 澶勭悊鐨勫璞″彲浠ユ坊鍔犳秷鎭搷搴斿嚱鏁板鐞嗕箣錛屽浜庡懡浠ゆ秷鎭紝瀹冩湁 CView , CDocument, CMainFram , CWinApp 涓緋誨垪澶勭悊
鑺傜偣錛屽浜庨氱煡娑堟伅錛孧FC榪樺姞鍏ヤ竴縐嶅緢濂界殑鏈哄埗錛氭秷鎭弽灝勶紝灝辨槸鐖剁獥鍙f敹鍒板瓙紿楀彛鍙戝嚭鐨勯氱煡娑堟伅鍚庯紝浼氬皢姝ゆ秷鎭?br> 鍙戦佺粰瀛愮獥鍙o紝鍏堣瀛愮獥鍙e鐞嗭紝濡傛灉瀛愮獥鍙d笉澶勭悊錛岀埗紿楀彛鍐嶅鐞嗕箣錛岃繖鏍鋒湁鍒╀簬灝嗘墍鏈夋秷鎭鐞嗕唬鐮侀兘闆嗘垚浜嗗瓙紿楀彛
涓紝鏈夊埄浜庢帶浠剁殑寮鍙戙侻FC鐨勬秷鎭鐞嗭紝鎴戜笉浜堣緇嗚璁轟簡錛屾湁鍏磋叮鐨勫彲浠ュ弬鑰冧警鎹風殑<<娣卞叆嫻呭嚭MFC>>銆?br>

]]>- 鍏充簬 return void()http://www.shnenglu.com/deane/archive/2009/07/08/89536.html鏉庨槼鏉庨槼Wed, 08 Jul 2009 03:54:00 GMThttp://www.shnenglu.com/deane/archive/2009/07/08/89536.htmlhttp://www.shnenglu.com/deane/comments/89536.htmlhttp://www.shnenglu.com/deane/archive/2009/07/08/89536.html#Feedback0http://www.shnenglu.com/deane/comments/commentRss/89536.htmlhttp://www.shnenglu.com/deane/services/trackbacks/89536.html
澶у閮界煡閬擄紝return 鐢ㄦ潵鍦ㄥ嚱鏁伴噷榪斿洖錛屾湁涓ょ褰㈠紡錛氫竴鏄?鐩存帴鐢╮eturn; 鎴栬呯渷鐣ワ紝琛ㄧず鏃犺繑鍥炲箋備簩鏄?return expression; 榪斿洖涓涓箋?br>浠婂ぉ嫻嬭瘯鏃舵垜鍙戠幇涓ょ浠ュ墠娌℃敞鎰忕殑鏂瑰紡錛屼篃鏄紜殑銆?br>
<1>.
void FuncA()


{
return void(); //姝g‘鐨勶紝鍚岋細return;
}
<2>.
void FuncB()


{
return FuncA();//涔熷彲浠ワ紝鍚岋細 FuncA();
}
榪欎袱縐嶇壒鎬у湪鏌愪簺鎯呭喌涓嬶紝鏄緢鏈夌敤鐨勩傛瘮濡傦紝鎴戣鍐欎竴涓嚱鏁版ā鏉匡紝浠?浠繪剰鐨勬ā鏉垮弬鏁扮被鍨?T 涓鴻繑鍥炲箋?br>
template <typename T>
T FuncC()


{
return T(); //榪欓噷涓句緥榪斿洖 T();
}

template <typename T>
T FuncD()


{
return FuncC<T>();
}
鎵浠ュ嵆浣垮浜?榪斿洖鍊?涓?void 鐨勬儏鍐碉紝FuncD<void>(); 涔熸槸閫傜敤鐨勩?br>濡傛灉緙栬瘧鍣ㄤ笉鏀寔榪欑鐗規с傞偅涔堝綋鎴戜滑灝卞緱閽堝void榪斿洖綾誨瀷榪涜鐗瑰寲錛屾垨鑰呭嚱鏁伴噸杞斤紝紺轟緥浠g爜濡備笅錛?br>
//涓鑸鐞?/span>
template <typename T>
T FuncE()


{
return FuncC<T>();
}

//鐗瑰寲鐗堟湰
template<>
void FuncE<void>()


{
FuncC<void>();
}

//鎴栬呰繘琛岄噸杞戒害鍙?/span>
void FuncE()


{
FuncC<void>();
}


void Test()


{
FuncE<int>(); //娉涘寲鐗堟湰
FuncE<void>(); //鐗瑰寲鐗堟湰
FuncE(); //閲嶈澆鐗堟湰
}

FuncE鍑芥暟娌℃湁鍙傛暟錛屽彲浠ョ壒鍖栨垨鑰呴噸杞斤紝浣嗗鏋滃畠榪樻湁鍏朵粬妯℃澘鍙傛暟鐨勮瘽錛岀敱浜庡嚱鏁版ā鏉夸笉鏀寔閮ㄥ垎鐗瑰寲錛屽氨鍙兘浣跨敤閲嶈澆妯℃澘鍑芥暟浜嗐?br>
鍙戠幇榪欑鏂瑰紡鍚庯紝涓烘垜鐪佷簡寰堝浜嬶紝鍘熸潵涓轟簡璇嗗埆涓涓ā鏉垮弬鏁版槸鍚︿負void錛屾垜妯℃嫙stl 鎼炰簡涓?templeate <typename T> Return_Type_Trait {}錛岀劧鍚庡埄鐢ㄧ被妯℃澘鐨勭壒鍖栨潵涓撻棬瀹氫箟涓浜涚被鍨嬶紝浠ュ埌杈捐瘑鍒繑鍥炵被鍨嬬殑鐩殑銆傜幇鍦ㄧ湅鏉ワ紝閮芥槸澶氫綑鐨勩傚彲浠ヤ嬌鐢ㄨ繖涓壒鎬ф潵瀹炵幇銆?br>

]]>
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