发表于 2009-1-5 19:48
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WTL for MFC Programming瀹炶返绡 --- 涓涓嚜瀹氫箟ComboBox鐨勭Щ妞嶈繃绋(涓)
鍙戝竷: 2008-6-26 11:25 | 浣滆: admin | 鏌ョ湅: 9娆
鎴戜滑閲嶆柊鍥炲埌璧风偣锛屾潵鐪嬬湅閭ｉ噷鍑轰簡閿欍備粩缁嗗湴鐮旇浠ｇ爜浠ュ悗鍙戠幇锛屼簨浠舵槸鎬庝箞浼犻掑埌MSG_MAP鐨勫憿锛熼毦閬撴垜浠氳繃璧嬪煎皢涓涓獥浣撳彞鏌勪紶杩涙潵锛屾垜浠湪杩欎釜绫讳腑瀹氫箟鐨凪SG_MAP灏辫兘鑷姩鐨勮繛鎺ュ埌杩欎釜鍙ユ焺涓婂悧锛熻繖鏄剧劧鏄湡鐨勪笉鍙兘銆
閭ｄ箞娌℃湁灏哅SG_MAP杩炴帴鍒扮獥浣撳彞鏌勫緢鍙兘鏄帶浠剁被鏃犳硶鏀跺埌浠讳綍浜嬩欢鐨勫師鍥犮傞偅涔堝浣曞皢MSG_MAP杩炴帴鍒扮獥浣撳彞鏌勪笂鍛紵鍘熶功涓彁鍒颁竴涓噸瑕佺殑鍑芥暟锛孋WindowImpl::SubclassWindow()銆傛垜浠啀娆℃洿鏀规垜浠殑鎺т欢绫伙細
CComboBoxEx& operator =(HWND hWnd) {
CWindowImpl< CComboBoxEx, CComboBox>::SubclassWindow(hWnd);
return *this;
}
涓娴嬩箣涓嬶紝澶у悆涓鎯娿備笉浠呴噸鐢讳簨浠惰姝ｇ‘瑙﹀彂锛岃繛鏋愭瀯鍑芥暟涓殑娌℃湁Attach鐨凞etach杩欎釜鎬敤娉曚篃鍙互鍒犻櫎浜嗐備负浠涔堜細杩欐牱鍛紵鎺㈢┒杩欎釜闂涔嬪墠锛岃鎴戜滑鍏堢湅鐪嬪師涔︿娇鐢ㄧ殑DDX_CONTROL瀹 - 瀹冨彧閽堝CWindowImpl鐨勬淳鐢熺被璧蜂綔鐢 - 鏄庝箞鍥炰簨銆傚師鐮佸涓嬶細
#define DDX_CONTROL(nID, obj) \
if(nCtlID == (UINT)-1 || nCtlID == nID) \
DDX_Control(nID, obj, bSaveAndValidate);
// Full control subclassing (for CWindowImpl derived controls)
template
void DDX_Control(UINT nID, TControl& ctrl, BOOL bSave)
{
if(!bSave && ctrl.m_hWnd == NULL)
{
T* pT = static_cast
ctrl.SubclassWindow(pT->GetDlgItem(nID));
}
}
浠庡師鐮佸彲浠ョ湅鍒帮紝DDX_CONTROL瀹忓拰DDX_CONTROL_HANDLER瀹忓疄鐜扮殑鍖哄埆鍙槸锛屽墠鑰呬娇鐢⊿ubclassWindow锛岃屽悗鑰呬娇鐢ㄦ搷浣滅鈥=鈥濄傚鏋滄妸鎴戜滑涓婇潰鐨勪唬鐮佽仈绯昏捣鏉ワ紝鍦ㄦ搷浣滅鈥=鈥濈殑澶勭悊鍑芥暟涓皟鐢⊿ubclassWindow锛屽叾瀹炲氨绛変簬鏄槑鐫浣跨敤DDX_CONTROL_HANDLER瀹忥紝鏆楀湴閲屽嵈鎶奃DX_CONTROL瀹忓疄鐜颁簡銆傚師鏉ユ兂鍑洪棬锛岀粨鏋滃厛缁曠潃鍚庨櫌璺戜簡3鍦堬紝杩欑湡鏄竴涓ぇ绗戣瘽銆
涓轰粈涔堜細杩欐牱鍛紵涓嶄娇鐢―DX_CONTROL瀹忔槸鍥犱负CComboBox娌℃湁SubclassWindow鍑芥暟锛岃屾槸鐢–ComboBox鏄洜涓哄湪MFC涓瑿ComboBoxEx灏辨槸浠嶤ComboBox娲剧敓锛岀Щ妞嶇殑鏃跺欏綋鐒跺惧悜浜庨夋嫨鍚屽悕鐨勭被锛岃屼笉鏄疌WindowImpl
鍙槸杩欓噷蹇借浜嗕竴涓熀鏈殑WTL鐗规э紝鐢变簬WTL鍩轰簬ATL锛岃岃璁TL灏辨槸涓轰簡灏嗘帴鍙ｅ拰瀹炵幇鍒嗗紑锛屾墍浠ュ湪WTL涓墍鏈変笉甯mpl瀛楁牱鐨勭被閮戒笉鏄疄鐜扮被锛屽儚CWindow锛孋Button锛孋ComboBox绛夌瓑锛屼粬浠彧鏄寘鍚竴涓彞鏌勶紝娌℃湁鑷繁鐨勪簨浠讹紝浠栦滑鍙槸璐熻矗涓浆锛屽皝瑁呮帶浠朵簨浠剁瓑绛夈傚儚CComboBox鐨勬搷浣滅鈥=鈥濆氨鍙槸涓涓祴鍊艰鍙ヨ屽凡銆傝孌DX_CONTROL_HANDLER姝ｆ槸涓鸿繖浜涚被鏈嶅姟鐨勶紝褰撶劧濡傛灉鎴戜滑娉ㄦ剰鍒拌繖涓畯寰楁敞閲婏紝涔熻鏃╁氨鍙戠幇杩欎釜闂浜嗭紝杩樿寰楀悧锛熷湪杩欓噷閲嶆俯涓涓嬪惂锛
// Full control subclassing (for CWindowImpl derived controls)
template
void DDX_Control(UINT nID, TControl& ctrl, BOOL bSave)
// Simple control attaching (for HWND wrapper controls)
template
void DDX_Control_Handle(UINT nID, TControl& ctrl, BOOL bSave)
濂戒簡锛屽湪鐜父鍦扮悆涓鍛ㄤ互鍚庯紝鎴戜滑鍙堝洖鍒颁簡璧风偣锛岃櫧鐒惰垂浜嗕笉灏戠殑鍔涙皵锛屼絾涔熸悶娓呮涓嶅皯鐨勪笢瑗匡紝涓嬮潰澶ф鍦版荤粨涓涓嬶細
WTL鐨勭被鍖呭惈鎺ュ彛绫伙紙鍙寘鍚獥浣撳彞鏌勫拰浜嬩欢鐨勫皝瑁咃級鍜屽疄鐜扮被锛堝彲浠ユ嫢鏈夎嚜宸辩殑浜嬩欢锛夛紝瑕佹牴鎹叿浣撴儏鍐垫湁閫夋嫨鐨勪娇鐢ㄣ
WTL涓嶄細鑷姩閿姣佺獥浣撳彞鏌勶紙褰撶劧鏄寚鎺ュ彛绫伙級锛屾墍浠ttach鎿嶄綔浠ュ悗瑕佽鐫Detach
娉ㄦ剰鍖呭惈鏈塇ANDLE鐨勫畯锛岀被锛屽嚱鏁帮紝瀹冧滑寰寰鏄帴鍙ｇ被鎴栦负鎺ュ彛绫绘湇鍔＄殑锛屽涓婇潰鎵璇寸殑DDX_Control_Handle锛屼互鍙奀DCHandle绛夌瓑銆
DDX鏄氳繃瀹忓畾涔夐噸杞紺WinDataExchange::DoDataExchange()鍑芥暟瀹炵幇鐨
娑堟伅鍙嶅皠鏄湪鍙栭亾鍙戦佹秷鎭殑绐椾綋鍙ユ焺鍚庯紝閫氳繃鍍忓畠鍥炲彂鐩稿簲鐨勬秷鎭潵瀹炵幇鐨勩
褰撲綘鎯宠杩欎笉鍙兘鐨勬椂鍊欙紝寰寰鏄綘鍦ㄨ皟鐢ㄧ殑鏂规硶涓婂嚭鐜颁簡閿欒銆
