- - êîìï³ëÿòîð;
- - Windows Platform SDK.
Ôóíêö³¿ RegisterClass ³ RegisterClassEx ïðèéìàþòü â ÿêîñò³ ºäèíîãî ïàðàìåòðà ïîêàæ÷èêè íà ñòðóêòóðè òèïó WNDCLASS ³ WNDCLASSEX â³äïîâ³äíî. Çíà÷åííÿ, ùî ïîâåðòàºòüñÿ òèïó ATOM ìîæå âèêîðèñòîâóâàòèñÿ çàì³ñòü ³ìåí³ êëàñó ïðè ñòâîðåíí³ â³êíà. ßêùî âèêëèê ôóíêö³¿ çàâåðøèòüñÿ íåâäà÷åþ, áóäå ïîâåðíóòî çíà÷åííÿ 0.
Ñòâîð³òü åêçåìïëÿð ñòðóêòóðè òèïó WNDCLASS àáî WNDCLASSEX. Çàïîâí³òü âñ³ íåîáõ³äí³ ïîëÿ. Çîêðåìà, êîðåêòí³ çíà÷åííÿ ïîâèíí³ áóòè ïîì³ùåí³ â:
- cbSize - ðîçì³ð ñòðóêòóðè â áàéòàõ-
- style - íàá³ð ñòèë³â êëàñó îêíà-
- lpfnWndProc - ïîêàæ÷èê íà â³êîííó ïðîöåäóðó-
- hInstance äåñêðèïòîð ìîäóëÿ, â ÿêîìó ïðîâîäèòüñÿ ðåºñòðàö³ÿ êëàñó â³êíà-
- lpszClassName - ñèìâîë³÷íå ³ì'ÿ êëàñó.
 ³íø³ ïîëÿ ìîæóòü áóòè çàïèñàí³ çíà÷åííÿ NULL. Ïðîâåä³òü âèêëèê ôóíêö³¿ äëÿ ðåºñòðàö³¿ êëàñó â³êíà. Ïåðåâ³ðòå ïîâåðíóòèé ðåçóëüòàò.
HWND CreateWindowEx (
DWORD dwExStyle,
LPCTSTR lpClassName,
LPCTSTR lpWindowName,
DWORD dwStyle,
int x,
int y,
int nWidth,
int nHeight,
HWND hWndParent,
HMENU hMenu,
HINSTANCE hInstance,
LPVOID lpParam
) -
Ôóíêö³ÿ CreateWindow â³äð³çíÿºòüñÿ â³ä CreateWindowEx ëèøå â³äñóòí³ñòþ ïàðàìåòðà dwExStyle.
Çä³éñí³òü âèêëèê CreateWindow àáî CreateWindowEx. Ïåðåäàéòå ÿê ïàðàìåòð lpClassName ³ì'ÿ àáî çíà÷åííÿ òèïó ATOM êëàñó â³êíà, âèçíà÷åíå íà ïåðøîìó àáî äðóãîìó êðîö³. Ïàðàìåòðàìè x, y, nWidth, nHeight ìîæóòü áóòè êîîðäèíàòè ³ ðîçì³ðè ñòâîðþâàíîãî â³êíà. Äåñêðèïòîð â³êíà-áàòüêà (ÿêùî òàêà º) ïåðåäàºòüñÿ ÷åðåç hWndParent.
Çáåðåæ³òü ³ ïðîàíàë³çóéòå çíà÷åííÿ, ïîâåðíåíå ôóíêö³ÿìè CreateWindow àáî CreateWindowEx. Ïðè óñï³õó âîíè ïîâåðíóòü äåñêðèïòîð íîâîãî â³êíà, ïðè íåâäà÷³ - NULL.