[reactos] 13/19: [RAPPS] reduce the chance assert failed

[赫杨]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=c5e111427c7945c9f687f…

commit c5e111427c7945c9f687f32d975c1eb694777cc1
Author:     赫杨 <1160386205(a)qq.com>
AuthorDate: Sun Aug 16 03:38:28 2020 +0800
Commit:     Mark Jansen <mark.jansen(a)reactos.org>
CommitDate: Sun Sep 6 17:10:16 2020 +0200

    [RAPPS] reduce the chance assert failed
---
 base/applications/rapps/loaddlg.cpp | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/base/applications/rapps/loaddlg.cpp b/base/applications/rapps/loaddlg.cpp
index dce708347bf..505e48643d7 100644
--- a/base/applications/rapps/loaddlg.cpp
+++ b/base/applications/rapps/loaddlg.cpp
@@ -149,6 +149,7 @@ public:
             UINT uiPercentage = ((ULONGLONG) ulProgress * 100) / ulProgressMax;
 
             /* send the current progress to the progress bar */
+            if (!IsWindow()) return;
             SendMessage(PBM_SETPOS, uiPercentage, 0);
 
             /* format total download size */
@@ -163,6 +164,7 @@ public:
         else
         {
             /* send the current progress to the progress bar */
+            if (!IsWindow()) return;
             SendMessage(PBM_SETPOS, 0, 0);
 
             /* total size is not known, display only current size */
@@ -170,6 +172,7 @@ public:
         }
 
         /* and finally display it */
+        if (!IsWindow()) return;
         SendMessage(WM_SETTEXT, 0, (LPARAM) ProgressText.GetString());
     }
 
@@ -492,8 +495,10 @@ VOID CDownloadManager::UpdateProgress(
 {
     HWND Item;
 
+    if (!IsWindow(hDlg)) return;
     ProgressBar.SetProgress(ulProgress, ulProgressMax);
 
+    if (!IsWindow(hDlg)) return;
     Item = GetDlgItem(hDlg, IDC_DOWNLOAD_STATUS);
     if (Item && szStatusText && wcslen(szStatusText) > 0 &&
UrlHasBeenCopied == FALSE)
     {
@@ -580,6 +585,7 @@ unsigned int WINAPI CDownloadManager::ThreadFunc(LPVOID param)
     for (iAppId = 0; iAppId < InfoArray.GetSize(); ++iAppId)
     {
         // Reset progress bar
+        if (!IsWindow(hDlg)) break;
         Item = GetDlgItem(hDlg, IDC_DOWNLOAD_PROGRESS);
         if (Item)
         {
@@ -616,7 +622,7 @@ unsigned int WINAPI CDownloadManager::ThreadFunc(LPVOID param)
             break;
         }
         
-
+        if (!IsWindow(hDlg)) goto end;
         SetWindowTextW(hDlg, szNewCaption.GetString());
 
         // build the path for the download
@@ -671,6 +677,7 @@ unsigned int WINAPI CDownloadManager::ThreadFunc(LPVOID param)
         }
 
         // Add the download URL
+        if (!IsWindow(hDlg)) goto end;
         SetDlgItemTextW(hDlg, IDC_DOWNLOAD_STATUS, InfoArray[iAppId].szUrl.GetString());
 
         DownloadsListView.SetDownloadStatus(iAppId, DLSTATUS_DOWNLOADING);
@@ -832,6 +839,7 @@ unsigned int WINAPI CDownloadManager::ThreadFunc(LPVOID param)
             }
 
             dwCurrentBytesRead += dwBytesRead;
+            if (!IsWindow(hDlg)) goto end;
             UpdateProgress(hDlg, dwCurrentBytesRead, dwContentLen, 0,
InfoArray[iAppId].szUrl.GetString());
         } while (dwBytesRead && !bCancelled);
 
@@ -850,6 +858,7 @@ unsigned int WINAPI CDownloadManager::ThreadFunc(LPVOID param)
             ProgressBar.SetMarquee(FALSE);
 
             dwContentLen = dwCurrentBytesRead;
+            if (!IsWindow(hDlg)) goto end;
             UpdateProgress(hDlg, dwCurrentBytesRead, dwContentLen, 0,
InfoArray[iAppId].szUrl.GetString());
         }
 
@@ -866,6 +875,7 @@ unsigned int WINAPI CDownloadManager::ThreadFunc(LPVOID param)
                 goto end;
             }
 
+            if (!IsWindow(hDlg)) goto end;
             SetWindowTextW(hDlg, szMsgText.GetString());
             SendMessageW(GetDlgItem(hDlg, IDC_DOWNLOAD_STATUS), WM_SETTEXT, 0, (LPARAM)
Path.GetString());
 
@@ -878,6 +888,7 @@ unsigned int WINAPI CDownloadManager::ThreadFunc(LPVOID param)
                     goto end;
                 }
 
+                if (!IsWindow(hDlg)) goto end;
                 MessageBoxW(hDlg, szMsgText.GetString(), NULL, MB_OK | MB_ICONERROR);
                 goto end;
             }
@@ -902,6 +913,7 @@ run:
                 //reflect installation progress in the titlebar
                 //TODO: make a separate string with a placeholder to include app name?
                 ATL::CStringW szMsgText = LoadStatusString(DLSTATUS_INSTALLING);
+                if (!IsWindow(hDlg)) goto end;
                 SetWindowTextW(hDlg, szMsgText.GetString());
 
                 DownloadsListView.SetDownloadStatus(iAppId, DLSTATUS_INSTALLING);
@@ -929,10 +941,12 @@ end:
                 DeleteFileW(Path.GetString());
         }
 
+        if (!IsWindow(hDlg)) return 0;
         DownloadsListView.SetDownloadStatus(iAppId, DLSTATUS_FINISHED);
     }
 
     delete static_cast<DownloadParam*>(param);
+    if (!IsWindow(hDlg)) return 0;
     SendMessageW(hDlg, WM_CLOSE, 0, 0);
     return 0;
 }