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DWORD64 WINAPI LoadLibrary64(const TCHAR* filePath)
{
	static X64Call LdrLoadDll("LdrLoadDll");
	if (!LdrLoadDll) return 0;

	DWORD64 module = 0;
	DWORD64 status = LdrLoadDll(0, 0, filePath, &module);
	if (!status) return module;

	SetLastError64(status);
	return NULL;
}

1
//There seems to be a mistake in the source code.
//The function should initialize the string.（LdrLoadDll）
RtlInitUnicodeString(A,B);
LdrLoadDll(0, 0,A,x);
2
32 bit process, loading 64 bit module failure

The 32 bit process can load 64 bit modules.
I can't do it. I'm looking for a solution.
yapi and wow64ext， it still won't solve the problem

How to call the x64 function in the x32 process?
I have tried different ways, but in windows 11 I get an error.
how to load x64 in my x32 process user32.dll and call MessageBoxA ?

If you enable memory high address allocation - x64Call will crash

memory.reg (system need to restart to enable)

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management]
"AllocationPreference"=dword:00010000

I tried change 0x7e (jle singed) to 0x76 (jbe unsigned) , but it didn't help