I need to create an array of objects when I click a button in Visual C++. I am having some difficulty doing so. Any help would be appreciated.

---Code within button click---
Code:
PictureBox* picBlocks[];

for(int i = 0; i < 5; i++)
{

picBlocks[i] = new PictureBox();

pnlGameField->Controls->Add(picBlocks[i]);

}
When I run it, it gives me an error about an unhandled exception.

Debug stops at the last line of code. I'm still quite a beginner, so I'm not exactly sure what to look for.

Thanks