taskmgr: Avoid using long.

programs/taskmgr/graphctl.c

@@ -416,14 +416,14 @@ static void GraphCtrl_DrawPoint(TGraphCtrl* this)
 
             /*  move to the previous point */
             prevX = this->m_rectPlot.right-this->m_nPlotShiftPixels;
-            prevY = this->m_rectPlot.bottom - 
-                (long)((this->m_dPreviousPosition[i] - this->m_dLowerLimit) * this->m_dVerticalFactor);
+            prevY = this->m_rectPlot.bottom -
+                (int)((this->m_dPreviousPosition[i] - this->m_dLowerLimit) * this->m_dVerticalFactor);
             MoveToEx(this->m_dcPlot, prevX, prevY, NULL);
 
             /*  draw to the current point */
             currX = this->m_rectPlot.right-this->m_nHalfShiftPixels;
             currY = this->m_rectPlot.bottom -
-                (long)((this->m_dCurrentPosition[i] - this->m_dLowerLimit) * this->m_dVerticalFactor);
+                (int)((this->m_dCurrentPosition[i] - this->m_dLowerLimit) * this->m_dVerticalFactor);
             LineTo(this->m_dcPlot, currX, currY);
 
             /*  Restore the pen  */

programs/taskmgr/run.c

@@ -56,7 +56,7 @@ void TaskManager_OnFileNew(void)
     static const WCHAR wszShell32[] = {'S','H','E','L','L','3','2','.','D','L','L',0};
 
     hShell32 = LoadLibraryW(wszShell32);
-    RunFileDlg = (RUNFILEDLG)(FARPROC)GetProcAddress(hShell32, (char*)((long)0x3D));
+    RunFileDlg = (void *)GetProcAddress(hShell32, (LPCSTR)61);
 
     /* Show "Run..." dialog */
     if (RunFileDlg)

programs/taskmgr/taskmgr.c

@@ -754,7 +754,7 @@ LPWSTR GetLastErrorText(LPWSTR lpwszBuf, DWORD dwSize)
                            NULL );
 
     /* supplied buffer is not long enough */
-    if (!dwRet || ( (long)dwSize < (long)dwRet+14)) {
+    if (!dwRet || ( dwSize < dwRet+14)) {
         lpwszBuf[0] = '\0';
     } else {
         lpwszTemp[strlenW(lpwszTemp)-2] = '\0';  /* remove cr and newline character */