VC创建定时关闭的MessageBox.doc

1、第一种方法：用微软提供的官方文档From : /kb/181934/en-us/Generally, when you want to display a message box for a limited amount of time, you must implement a regular dialog box that closes itself after a specified amount of time. The problem with this method is that you lose the standard message box functionality that Windows provides. The following example shows how to use the MessageBox function to create a message box that automatically closes after a specified amount of time. Note the following about the example: The example uses a Windows timer that fires an event after the specified amount of time has elapsed. When the timer event occurs, the PostQuitMessage API is used to break out of the modal message loop that MessageBox uses. Note The WM_QUIT message must be removed from the message queue to prevent it from being retrieved in the main message queue. view plaincopy to clipboardprint?1. /* 2. THISCODEANDINFORMATIONISPROVIDEDASISWITHOUTWARRANTYOF 3. ANYKIND,EITHEREXPRESSEDORIMPLIED,INCLUDINGBUTNOTLIMITEDTO 4. THEIMPLIEDWARRANTIESOFMERCHANTABILITYAND/ORFITNESSFORA 5. PARTICULARPURPOSE. 6. 7. Copyright1998MicrosoftCorporation.AllRightsReserved. 8. */9. 10. /* 11. * 12. *MsgBox.c 13. * 14. *Abstract: 15. * 16. *Sampleprogramtodemonstratehowaprogramcandisplaya 17. *timedmessagebox. 18. * 19. */20. 21. #defineSTRICT 22. #include 23. 24. /* 25. * 26. *Overview 27. * 28. *Thekeytocreatingatimedmessageboxisexitingthedialog 29. *boxmessageloopinternaltothemessagebox.Becausethe 30. *messageloopforamessageboxispartofUSER,youcannot 31. *modifythemessageloopwithoutusinghooksandothersuchmethods. 32. * 33. * 34. *However,allmessageloopsexitwhentheyreceivea 35. *WM_QUITmessage.Additionally,ifanestedmessageloop 36. *receivesaWM_QUITmessage,thenestedmessageloopmustbreak 37. *theloopandthenre-postthequitmessagesothatthenext 38. *outerlayercanprocessit. 39. * 40. *Therefore,youcanmakethenestedmessageloopexitby 41. *callingthePostQuitMessagefunction.Thenestedmessageloopwill 42. *cleanupandpostanewquitmessage.WhentheMessageBox 43. *returns,youpeektoseeifthereisaquitmessage.Ifso, 44. *itmeansthatthemessageloopwasabnormallyterminated. 45. *YoualsoconsumetheWM_QUITmessageinsteadofre-postingit 46. *sothattheapplicationcontinuestorun. 47. * 48. *Essentially,youhavetrickedthenestedmessageloopinto 49. *determiningthattheapplicationisterminating.Whenthequitmessage 50. *returns,youconsumethequitmessage.Thismethodeffectivelycancels 51. *thefakequitmessagethatyougenerated. 52. * 53. */54. 55. /* 56. * 57. *Globalvariables 58. * 59. */60. 61. HWNDg_hwndTimedOwner; 62. BOOLg_bTimedOut; 63. 64. /* 65. * 66. *MessageBoxTimer 67. * 68. *Thetimercallbackfunctionthatpoststhefakequitmessage. 69. *Thisfunctioncausesthemessageboxtoexitbecausethemessagebox 70. *hasdeterminedthattheapplicationisexiting. 71. * 72. */73. voidCALLBACKMessageBoxTimer(HWNDhwnd, 74. UINTuiMsg, 75. UINTidEvent, 76. DWORDdwTime) 77. 78. g_bTimedOut=TRUE; 79. if(g_hwndTimedOwner) 80. EnableWindow(g_hwndTimedOwner,TRUE); 81. PostQuitMessage(0); 82. 83. 84. /* 85. * 86. *TimedMessageBox 87. * 88. *ThesameasthestandardMessageBox,exceptthatTimedMessageBox 89. *alsoacceptsatimeout.Iftheuserdoesnotrespondwithinthe 90. *specifiedtimeout,thevalue0isreturnedinsteadofoneofthe 91. *ID*values. 92. * 93. */94. intTimedMessageBox(HWNDhwndOwner, 95. LPCTSTRpszMessage, 96. LPCTSTRpszTitle, 97. UINTflags, 98. DWORDdwTimeout) 99. 100. UINTidTimer; 101. intiResult; 102. 103. g_hwndTimedOwner=NULL; 104. g_bTimedOut=FALSE; 105. 106. if(hwndOwner&IsWindowEnabled(hwndOwner) 107. g_hwndTimedOwner=hwndOwner; 108. 109. /Setatimertodismissthemessagebox. 110. idTimer=SetTimer(NULL,0,dwTimeout,(TIMERPROC)MessageBoxTimer); 111. 112. iResult=MessageBox(hwndOwner,pszMessage,pszTitle,flags); 113. 114. /Finishedwiththetimer. 115. KillTimer(NULL,idTimer); 116. 117. /SeeifthereisaWM_QUITmessageinthequeueifwetimedout. 118. /Eatthemessagesowedonotquitthewholeapplication. 119. if(g_bTimedOut) 120. 121. MSGmsg; 122. PeekMessage(&msg,NULL,WM_QUIT,WM_QUIT,PM_REMOVE); 123. iResult=-1; 124. 125. 126. returniResult; 127. 128. 129. /* 130. * 131. *WinMain 132. * 133. *Programentrypoint.DemonstrateTimedMessageBox(). 134. * 135. */136. intWINAPIWinMain(HINSTANCEhinst, 137. HINSTANCEhinstPrev, 138. LPSTRpszCmdLine, 139. intnCmdShow) 140. 141. 142. UINTuiResult; 143. 144. /Asktheuseraquestion.Givetheuserfivesecondsto 145. /answerthequestion. 146. uiResult=TimedMessageBox(NULL, 147. Doesatrianglehavethreesides?, 148. Quiz, 149. MB_YESNO, 150. /NULLfirstparameterisimportant. 151. 5000); 152. 153. switch(uiResult) 154. caseIDYES: 155. MessageBox(NULL, 156. Thatsright!, 157. Result, 158. MB_OK); 159. break; 160. 161. caseIDNO: 162. MessageBox(NULL, 163. Believeitornot,triangles164. reallydohavethreesides., 165. Result, 166. MB_OK); 167. break; 168. 169. case-1: 170. MessageBox(NULL, 171. Isensedsomehesitationthere.172. ThecorrectanswerisYes., 173. Result, 174. MB_OK); 175. break; 176. 177. 178. return0; 179. 2、第二种方法：使用手动创建的对话框新建一个对话框，添加一个静态文本控件（显示内容），如下图:将Static控件关联CString类型变量为m_strText、并为该对话框添加新类CMSGBox，再添加WM_TIMER消息：view plaincopy to clipboardprint?1. voidCMSGBox:OnTimer(UINTnIDEvent) 2. 3. /TODO:Addyourmessagehandlercodehereand/orcalldefault 4. if(1=nIDEvent) 5. 6. KillTimer(1); 7. EndDialog(IDOK); 8. 9. CDialog:OnTimer(nIDEvent); 10. PS：我觉得此处代码可以改成这样，就可以设定多个定时器（我可没测试）view plaincopy to clipboardprint?1. voidCMSGBox:OnTimer(UINTnIDEvent) 2. 3. /TODO:Addyourmessagehandlercodehereand/orcalldefault 4. if(nIDE