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en:docs:fapi:dosgetmachinemode [2021/09/17 06:08] – prokushev | en:docs:fapi:dosgetmachinemode [2021/12/05 09:59] (current) – prokushev | ||
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This call returns the current mode of the processor, whether the processor is running in the DOS mode or the OS/2 mode. This allows an application to determine whether a dynamic link call is valid or not. | This call returns the current mode of the processor, whether the processor is running in the DOS mode or the OS/2 mode. This allows an application to determine whether a dynamic link call is valid or not. | ||
- | ====== Syntax | + | ===== Syntax ===== |
<code c> | <code c> | ||
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</ | </ | ||
- | ====== Parameters | + | ===== Parameters ===== |
- | * MachineMode (PBYTE) - output: Address of the value to indicate the current processor mode. This value may be: | + | * MachineMode ([[PBYTE]]) - output: Address of the value to indicate the current processor mode. This value may be: |
*0 - DOS (real) mode | *0 - DOS (real) mode | ||
*1 - OS/2 (protected) mode. | *1 - OS/2 (protected) mode. | ||
- | ====== Return Code ====== | + | ===== Return Code ===== |
- | + | rc ([[USHORT]]) - return | |
- | * rc (USHORT) - return | + | |
Return code description is: | Return code description is: | ||
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*0 NO_ERROR | *0 NO_ERROR | ||
- | ====== Remarks | + | ===== Remarks ===== |
All dynamic link calls are available to an application if the MachineMode value indicates the program is in OS/2 mode. This method provides a self-tailoring application that allows the application to adapt to the execution environment by limiting or enhancing the functions it provides. | All dynamic link calls are available to an application if the MachineMode value indicates the program is in OS/2 mode. This method provides a self-tailoring application that allows the application to adapt to the execution environment by limiting or enhancing the functions it provides. | ||
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If the MachineMode value indicates the program is in DOS mode (or real), the application is limited to a subset of dynamic link calls listed in the [[en: | If the MachineMode value indicates the program is in DOS mode (or real), the application is limited to a subset of dynamic link calls listed in the [[en: | ||
- | ====== Example Code ====== | + | ===== Example Code ===== |
- | ===== C Binding | + | ==== C Binding ==== |
<code c> | <code c> | ||
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</ | </ | ||
- | ===== MASM Binding | + | ==== MASM Binding ==== |
- | < | + | < |
EXTRN DosGetMachineMode: | EXTRN DosGetMachineMode: | ||
INCL_DOSMISC | INCL_DOSMISC | ||
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Returns WORD | Returns WORD | ||
- | ====== Note ====== | + | ===== Note ===== |
Text based on [[http:// | Text based on [[http:// |