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Added check for valid DC

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svn path=/trunk/; revision=1255
This commit is contained in:
Eric Kohl 2000-07-08 09:46:32 +00:00
parent 0afbea5a1c
commit fb7b00bd59
1 changed files with 5 additions and 3 deletions
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8
reactos/apps/tests/gditest/gditest.c
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@ -8,7 +8,7 @@
int main (void)
{
HDC Desktop, MyDC;
HPEN RedPen, GreenPen;
HPEN RedPen, GreenPen;
HBITMAP MyBitmap;
DWORD shit;
@ -16,6 +16,8 @@ int main (void)
// Set up a DC called Desktop that accesses DISPLAY
Desktop = CreateDCA("DISPLAY", NULL, NULL, NULL);
if (Desktop == NULL)
return 1;
// Create a red pen and select it into the DC
RedPen = CreatePen(PS_SOLID, 8, 0x0000ff);
@ -35,10 +37,10 @@ int main (void)
// Bitblt from the DISPLAY DC to MyDC and then back again in a different location
BitBlt(MyDC, 0, 0, 151, 251, Desktop, 50, 50, SRCCOPY);
// Draw a rectangle on the memory DC before bltting back with a green pen
// Draw a rectangle on the memory DC before bltting back with a green pen
GreenPen = CreatePen(PS_SOLID, 3, 0x00ff00);
SelectObject(MyDC, GreenPen);
Rectangle(MyDC, 10, 10, 50, 50);
Rectangle(MyDC, 10, 10, 50, 50);
BitBlt(Desktop, 400, 100, 151, 251, MyDC, 0, 0, SRCCOPY);