Do I still get a stimulus check if I use IRS form 1040

Yes, if you filed a Form 1040 tax return in 2018 or 2019, the IRS will have you on its list as eligible, assuming you meet the other requirements.

According to the IRS FAQ website at this link:

"Tax filers with adjusted gross income up to $75,000 for individuals and up to $150,000 for married couples filing joint returns will receive the full payment. For filers with income above those amounts, the payment amount is reduced by $5 for each $100 above the $75,000/$150,000 thresholds. Single filers with income exceeding $99,000 and $198,000 for joint filers with no children are not eligible. Social Security recipients and railroad retirees who are otherwise not required to file a tax return are also eligible and will not be required to file a return. 

Eligible taxpayers who filed tax returns for either 2019 or 2018 will automatically receive an economic impact payment of up to $1,200 for individuals or $2,400 for married couples and up to $500 for each qualifying child."