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how to initialize ?

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take a look: void f() { static D3DXMATRIX matrix; ZeroMemory(&matrix, sizeof(D3DXMATRIX)); .... } this way,every time the matrix will be zero. so how to have this way: static D3DXMATRIX matrix = ZeroMemroy(...); I know this not work,just give some tip. so how to do? I must do this way? int static i = 0;i++;if (i ==1)ZeroMemory(&matrix, sizeof(D3DXMATRIX));

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void f()
{
static D3DXMATRIX matrix;
static initialised = false;
if ( !initialised )
{
ZeroMemory(&matrix, sizeof(D3DXMATRIX));
initialised = true;
}

...
}

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