InstallShield自定义对话框浅谈(三)

/*------------------------------------------------------------------------*/
/* */
/* Function: BuildSQLServerDSN */
/* */
/* Descrip: use custom sqlserver's dsn dlg to create dsn. */
/* */
/* Misc: */
/* */
/*------------------------------------------------------------------------*/
function BuildSQLServerDSN(bFirstStep, bAllowNotSet,szTitle)
BOOL bDone;
NUMBER nMessage;
STRING szSQLAddr, szSQLDB, szDBUserName, szDBUserPwd, szSQLDSN;
SHORT nDSNType;
STRING svArg[1024];
STRING svDSN, svAddr, svDB, svUID, svPWD;
NUMBER nSplitPos;
HWND hwndDlg;
BOOL bBuildResult;
SHORT wErrMsgLen;
STRING szErrMsg[MAX_PATH + 1];
LONG dwErrCode;
begin

bDone = FALSE;
// 用EzDefineDialog定义一个对话框
nMessage = EzDefineDialog(DSN_SQLSERVER_DLG, ISUSER, "", DLG_DSN_SQLSERVER);
if(nMessage = DLG_ERR) then
MessageBox("不能进行配置SQLSERVER数据源——找不到对话框", SEVERE);
bDone = TRUE;
endif;
while(bDone = FALSE)
nMessage = WaitOnDialog(DSN_SQLSERVER_DLG);
switch(nMessage)
case DLG_INIT:
hwndDlg = CmdGetHwndDlg(DSN_SQLSERVER_DLG);
CheckSQLServerDSNInputValid(hwndDlg, bAllowNotSet);
if(bFirstStep) then
_WinSubEnableControl(hwndDlg, SD_PBUT_BACK, 0);
endif;
_WinSubSetWindowTitle(hwndDlg, szTitle);
CtrlSetState(DSN_SQLSERVER_DLG, IDC_RADIO_DSN_USER, BUTTON_CHECKED);

case DLG_ERR:
MessageBox("不能显示配置SQLSERVER数据源对话框", SEVERE);
bDone = TRUE;

case CANCEL:
bDone = TRUE;

case DLG_CLOSE:
bDone = TRUE;

case SD_PBUT_CONTINUE:
// 调用接口添加一个dsn
// ...
CtrlGetText(DSN_SQLSERVER_DLG, IDC_EDIT_DB_ADDR, szSQLAddr);
CtrlGetText(DSN_SQLSERVER_DLG, IDC_EDIT_SQLSERVER_DB, szSQLDB);
CtrlGetText(DSN_SQLSERVER_DLG, IDC_EDIT_SQLSERVER_USER_NAME, szDBUserName);
CtrlGetText(DSN_SQLSERVER_DLG, IDC_EDIT_SQLSERVER_USER_PWD, szDBUserPwd);
CtrlGetText(DSN_SQLSERVER_DLG, IDC_EDIT_SQLSERVER_DSN, szSQLDSN);
if(StrLength(szSQLAddr) = 0) then
if(AskYesNo("没有输入服务器，是否以后进行配置？", YES) = NO) then
_WinSubFocusControl(hwndDlg, IDC_EDIT_DB_ADDR);
else
bDone = TRUE;
endif;
elseif(StrLength(szSQLDB) = 0) then
if(AskYesNo("没有输入数据库，是否以后进行配置？", YES) = NO) then
_WinSubFocusControl(hwndDlg, IDC_EDIT_SQLSERVER_DB);
else
bDone = TRUE;
endif;
elseif(StrLength(szDBUserName) = 0) then
if(AskYesNo("没有输入数据库用户，是否以后进行配置？", YES) = NO) then
_WinSubFocusControl(hwndDlg, IDC_EDIT_SQLSERVER_USER_NAME);
else
bDone = TRUE;
endif;
elseif(StrLength(szSQLDSN) = 0) then
if(AskYesNo("没有输入数据源名称，是否以后进行配置？", YES) = NO) then
_WinSubFocusControl(hwndDlg, IDC_EDIT_SQLSERVER_DSN);
else
bDone = TRUE;
endif;
else
// 已经获取了所有数据，可以调用SQLConfigDataSource添加数据源了
// 组织语句
// 注：由于DSN不保存UID和PWD，所以在Attribute中不能加入这两个
// 关键字，并且每个关键子之间用'/0'分割，由于InstallShield
// 中不支持一个字符串中间存在'/0'，因此，不能直接用+连接这些
// 关键字，下面是一个变通的方法
if(CtrlGetState(DSN_SQLSERVER_DLG, IDC_RADIO_DSN_USER) = BUTTON_CHECKED) then
nDSNType = ODBC_ADD_DSN;
else
nDSNType = ODBC_ADD_SYS_DSN;
endif;
svDSN = "DSN=" + szSQLDSN;
svAddr = "SERVER=" + szSQLAddr;
svDB = "DATABASE=" + szSQLDB;
svUID = "UID=" + szDBUserName;
svPWD = "PWD=" + szDBUserPwd;
svArg = svDSN + ' ' + svAddr + ' ' + svDB;
nSplitPos = StrLength(svDSN);
svArg[nSplitPos] = '/0';
nSplitPos += StrLength(svAddr) + 1;
svArg[nSplitPos] = '/0';
nSplitPos += StrLength(svDB) + 1;
svArg[nSplitPos] = '/0';
// 调用ODBCCP32中的SQLConfigDataSource添加一个DSN
// 如果返回FALSE，表示添加失败，这时可以调用
// SQLInstallerError来得到失败的原因
bBuildResult = SQLConfigDataSource(NULL, nDSNType, "SQL Server", svArg);
if(bBuildResult) then
// 如果添加成功
bDone = TRUE;
else
// 添加失败
wErrMsgLen = MAX_PATH;
SQLInstallerError(1, &dwErrCode, szErrMsg, wErrMsgLen, &wErrMsgLen);
if(bAllowNotSet) then
szErrMsg = "配置数据源失败——" + szErrMsg + "！是否以后进行配置？";
if(AskYesNo(szErrMsg, YES) = NO) then
bDone = FALSE;
else
bDone = TRUE;
endif;
else
szErrMsg = "配置数据源失败——" + szErrMsg + "！";
MessageBox(szErrMsg, SEVERE);
endif;
endif;
endif;

case SD_PBUT_BACK:
// 上一步
bDone = TRUE;

case SD_PBUT_EXITSETUP:
bDone = TRUE;

case IDC_RADIO_DSN_USER:
CheckSQLServerDSNInputValid(hwndDlg, bAllowNotSet);

case IDC_RADIO_DSN_SYSTEM:
CheckSQLServerDSNInputValid(hwndDlg, bAllowNotSet);

case IDC_EDIT_DB_ADDR:
CheckSQLServerDSNInputValid(hwndDlg, bAllowNotSet);

case IDC_EDIT_SQLSERVER_USER_NAME:
CheckSQLServerDSNInputValid(hwndDlg, bAllowNotSet);

case IDC_EDIT_SQLSERVER_USER_PWD:
CheckSQLServerDSNInputValid(hwndDlg, bAllowNotSet);

case IDC_EDIT_SQLSERVER_DSN:
CheckSQLServerDSNInputValid(hwndDlg, bAllowNotSet);

case IDC_EDIT_SQLSERVER_DB:
CheckSQLServerDSNInputValid(hwndDlg, bAllowNotSet);

endswitch;

endwhile;

EndDialog(DSN_SQLSERVER_DLG);
ReleaseDialog(DSN_SQLSERVER_DLG);

if(nMessage = SD_PBUT_CONTINUE) then
return NEXT;
elseif(nMessage = SD_PBUT_BACK) then
return BACK;
else
Do(EXIT);
endif; end;