HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AeDebug
| Data type | Range | Default value |
|---|---|---|
| REG_DWORD | 0x0 - 0xFF | 0x0 |
Specifies the key that, when pressed, establishes a breakpoint in code being debugged.
The debugger interrupts code processing at the breakpoint so the programmer can examine a suspected problem.
The key specified in this value only sets a breakpoint. It does not invoke the debugger (the debugger must be running before the key is pressed) and it does not switch the debugger to single-step mode.
The value of this entry is a keyboard scan code. The default value, 0x0, represents the F12 key on a 101-key keyboard or the - (hyphen, VK_SUBTRACT) key on an 82-key keyboard.
The following table lists the scan codes and virtual key codes for a standard keyboard.
| Scan code | Virtual key code |
|---|---|
| 0x00 | VK_SUBTRACT (F12) |
| 0x01 | VK_LBUTTON |
| 0x02 | VK_RBUTTON |
| 0x03 | VK_CANCEL |
| 0x04 | VK_MBUTTON |
| 0x08 | VK_BACK |
| 0x09 | VK_TAB |
| 0x0C | VK_CLEAR |
| 0x0D | VK_RETURN |
| 0x10 | VK_SHIFT |
| 0x11 | VK_CONTROL |
| 0x12 | VK_MENU |
| 0x13 | VK_PAUSE |
| 0x14 | VK_CAPITAL |
| 0x15 | VK_KANA, VK_HANGEUL, VK_HANGUL |
| 0x17 | VK_JUNJA |
| 0x18 | VK_FINAL |
| 0x19 | VK_HANJA, VK_KANJI |
| 0x1B | VK_ESCAPE |
| 0x1C | VK_CONVERT |
| 0x1D | VK_NONCONVERT |
| 0x1E | VK_ACCEPT |
| 0x1F | VK_MODECHANGE |
| 0x20 | VK_SPACE |
| 0x21 | VK_PRIOR |
| 0x22 | VK_NEXT |
| 0x23 | VK_END |
| 0x24 | VK_HOME |
| 0x25 | VK_LEFT |
| 0x26 | VK_UP |
| 0x27 | VK_RIGHT |
| 0x28 | VK_DOWN |
| 0x29 | VK_SELECT |
| 0x2A | VK_PRINT |
| 0x2B | VK_EXECUTE |
| 0x2C | VK_SNAPSHOT |
| 0x2D | VK_INSERT |
| 0x2E | VK_DELETE |
| 0x2F | VK_HELP |
| 0x30 - 0x39 | VK_0 - VK_9 (ASCII 0 - 9) |
| 0x41 - 0x5A | VK_A - VK_Z (ASCII A - Z) |