Update system info box to be read only and fixed scrolling.

apps/progman/progman.c

@@ -669,8 +669,8 @@ static void showSystemInfo(void) {
     ta->weight = 100;
     wgtSetText(ta, info);
 
-    // Mark read-only by disabling the text area
+    // Don't disable — wgtSetEnabled(false) blocks all input including scrollbar
-    wgtSetEnabled(ta, false);
+    wgtSetReadOnly(ta, true);
 }
 
 

dvx/dvxWidget.h

@@ -338,6 +338,7 @@ typedef struct WidgetT {
     // State
     bool             visible;
     bool             enabled;
+    bool             readOnly;
     bool             focused;
     char             accelKey;     // lowercase accelerator character, 0 if none
 
@@ -895,6 +896,9 @@ const char *wgtGetText(const WidgetT *w);
 // Enable/disable a widget
 void wgtSetEnabled(WidgetT *w, bool enabled);
 
+// Set read-only mode (allows scrolling/selection but blocks editing)
+void wgtSetReadOnly(WidgetT *w, bool readOnly);
+
 // Show/hide a widget
 void wgtSetVisible(WidgetT *w, bool visible);
 

dvx/platform/dvxPlatformDos.c

@@ -831,7 +831,8 @@ const char *platformGetSystemInfo(const DisplayT *display) {
 
     if (__dpmi_get_free_memory_information(&memInfo) == 0) {
         if (memInfo.largest_available_free_block_in_bytes != 0xFFFFFFFFUL) {
-            sysInfoAppend("Largest free block: %lu KB", (unsigned long)(memInfo.largest_available_free_block_in_bytes / 1024));
+            uint32_t largestKb = memInfo.largest_available_free_block_in_bytes / 1024;
+            sysInfoAppend("Largest free block: %lu KB (%lu MB)", (unsigned long)largestKb, (unsigned long)(largestKb / 1024));
         }
         if (memInfo.total_number_of_physical_pages != 0xFFFFFFFFUL) {
             uint32_t totalKb = memInfo.total_number_of_physical_pages * 4;

dvx/widgets/widgetOps.c

@@ -466,6 +466,17 @@ void wgtSetEnabled(WidgetT *w, bool enabled) {
 }
 
 
+// ============================================================
+// wgtSetReadOnly
+// ============================================================
+
+void wgtSetReadOnly(WidgetT *w, bool readOnly) {
+    if (w) {
+        w->readOnly = readOnly;
+    }
+}
+
+
 // ============================================================
 // wgtSetText
 // ============================================================

dvx/widgets/widgetTextInput.c

@@ -1319,6 +1319,11 @@ void widgetTextAreaOnKey(WidgetT *w, int32_t key, int32_t mod) {
         return;
     }
 
+    // Read-only: allow select-all, copy, and navigation but block editing
+    if (w->readOnly) {
+        goto navigation;
+    }
+
     // Ctrl+V — paste
     if (key == 22) {
         if (sClipboardLen > 0) {
@@ -1543,6 +1548,7 @@ void widgetTextAreaOnKey(WidgetT *w, int32_t key, int32_t mod) {
         return;
     }
 
+navigation:
     // Left arrow
     if (key == (0x4B | 0x100)) {
         SEL_BEGIN();
@@ -1712,8 +1718,8 @@ void widgetTextAreaOnKey(WidgetT *w, int32_t key, int32_t mod) {
         return;
     }
 
-    // Printable character
+    // Printable character (blocked in read-only mode)
-    if (key >= 32 && key < 127) {
+    if (key >= 32 && key < 127 && !w->readOnly) {
         if (*pLen < bufSize - 1) {
             textEditSaveUndo(buf, *pLen, CUR_OFF(), w->as.textArea.undoBuf, &w->as.textArea.undoLen, &w->as.textArea.undoCursor, bufSize);
 

dvxshell/shellExport.c

@@ -353,6 +353,7 @@ DXE_EXPORT_TABLE(shellExportTable)
     DXE_EXPORT(wgtSetTooltip)
     DXE_EXPORT(wgtGetText)
     DXE_EXPORT(wgtSetEnabled)
+    DXE_EXPORT(wgtSetReadOnly)
     DXE_EXPORT(wgtSetVisible)
     DXE_EXPORT(wgtGetContext)
     DXE_EXPORT(wgtSetName)