If your approach to the arrival of 64-bit VBA has been to keep your head in the sand and pretend it does not exist, I have some bad news for you. Can't I Just Ostrich This Thing a Little Longer? Philipp Stiefel has the most comprehensive tutorial for upgrading API declarations at: Windows API declarations in VBA for 64-bit. You can't simply do a find and replace of Long with LongPtr in all of your Declare statements.
Office 32bit 64bit how to#
There is no across-the-board rule for how to update every API declaration from VBA 6 to VBA 7. However, if the VBA 6 Long argument actually refers to a memory address, then the argument should be declared as a LongPtr in VBA 7. If the Long argument of an API function represents a plain old number, then it should remain declared as a Long integer in VBA 7. All memory addresses were 32 bits long.īeginning in VBA 7, you can begin to update your API declarations. In VBA 6 and earlier, there was no need to distinguish between a long integer that referred to a memory address and a long integer that referred to a plain old number. LongPtr: a 32-bit integer when running in 32-bit mode and a 64-bit integer when running in 64-bit mode.VBA 7 introduced a couple of new data types to handle this situation:
Office 32bit 64bit 64 bits#
In 64-bit VBA, those memory addresses are 64 bits long. In 32-bit VBA, those memory addresses are 32 bits long. Many API calls include arguments that are pointers to memory locations. While there are several compatibility issues to be aware of when updating your code for 64-bit VBA, one of the most common is the requirement to update your API declarations with the PtrSafe keyword. API Declares Require PtrSafe in 64-bit Mode That default setting changed to 64-bit as of Office 2019/Office 365/Microsoft 365: For Office 2019 and 365, the default installation mode is now the 64-bit version. For Office 2016 and earlier, the default installation mode was the 32-bit version. As recently as Office 2016, Microsoft recommended installing the 32-bit version of its flagship office suite.
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