Книга: Microsoft Windows Embedded CE 6.0 Exam Preparation Kit
Overriding Debug Zones at Startup
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Overriding Debug Zones at Startup
Windows Embedded CE enables the zones you specify in the dpCurSettings variable when you start the application or load the DLL into a process. At this point, it is not yet possible to change the debug zone unless you set a breakpoint and change the ulZoneMask value in the Watch window. However, CE supports a more convenient method through registry settings. To facilitate loading a module with different active debug zones, you can create a REG_DWORD value with a name that corresponds to the module name specified in the lpszName field of the dpCurSettings variable and set it to the combined values of the debug zones you want to activate. You can configure this value on the development workstation or the target device. It is generally preferable to configure this value on the development workstation because changing target device registry entries requires you to rebuild the run-time image, whereas a modification of the registry entries on the development workstation only requires you to restart the affected modules.
Table 4-3 illustrates the configuration for a sample module called ModuleName. Make sure you replace this placeholder name with the actual name of your executable file or DLL.
Table 4-3 Startup registry parameter examples
| Location | Development Workstation | Target Device |
|---|---|---|
| Registry Key | HKEY_CURRENT_USERPegasusZones | HKEY_LOCAL_MACHINEDebugZones |
| Entry Name | ModuleName | ModuleName |
| Type | REG_DWORD | REG_DWORD |
| Value | 0x00000001-0x7FFFFFFF | 0x00000001-0x7FFFFFFF |
| Comments | The Debug Message system uses the target-side value for a module only if the development workstation is unavailable or if the development-side registry does not contain a value for the module. | |
NOTE
Enabling all debug zones
Windows Embedded CE uses the lower 16 bits of the REG_DWORD value to define named debug zones for application debugging purposes. The remaining bits are available to define unnamed debug zones, with the exception of the highest bit, which is reserved for the kernel. Therefore, you should not set a module's debug zone value to 0xFFFFFFFF. The maximum value is 0x7FFFFFFF, which enables all named and unnamed debug zones.
MORE INFO
Pegasus registry key
The name Pegasus refers to the code name of the first Windows CE version that Microsoft released for handheld personal computers and other consumer electronics in 1996.
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