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POMFC CEdit passing pParentWnd
 

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  1. POMFC CEdit passing pParentWnd
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    <p>I am creating a very very simple spreadsheet type application. It has a grid that draws cells and the user can specify the cell type (text, check box, radio button).</p> <p>I'm trying to get the text to work out. In the main View class I have:</p> <pre><code>void CSpreadView::OnInsertText() { CEdit* pEdit = new CEdit; CWnd* pParentWnd = this; grid.CellType(pEdit, pParentWnd); Invalidate(); UpdateWindow(); } </code></pre> <p>I'm passing the parent window because I don't know if there is a way to find the parent window if I'm in another class.</p> <p>So the function that receives it:</p> <pre><code>void Grid::CellType(CEdit* pEdit, CWnd* pParentWnd) { for (int a=0; a&lt;(int) cells.size(); a++) { if(cells[a]-&gt;selected) cells[a]-&gt;Type(pEdit, pParentWnd); } } </code></pre> <p>Finally, when the cell is drawn it does:</p> <pre><code>if(type=="text") { CEdit* pEdit = new CEdit; pEdit-&gt;Create(ES_MULTILINE | WS_CHILD | WS_VISIBLE | WS_TABSTOP | WS_BORDER, CRect(x1+10, y1+10, x2-10, y2-10), pParentWnd, 1); } </code></pre> <p>The problem: it actually draws the box, however, the text is invisible. When I type it flashes, but when I stop it disappears. Does anyone know why this is happening?</p> <p>Just so you know, I want the cell to control its type and do the drawing because the user can add/delete rows and columns. That I way I don't need to keep track of what text boxes where previously drawn. The grid is drawn by:</p> <pre><code>CBrush brush(RGB(color, color, color)); pDC-&gt;SelectObject(&amp;brush); pDC-&gt;Rectangle(x1, y1, x2, y2); </code></pre> <p>This is what I see: <img src="https://i.stack.imgur.com/sRk9i.png" alt="enter image description here"></p>
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    1. USmgalal
    1. USmgalal
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    1. COWhy do you create two different `CEdit`s? There is one created in `OnInsertText()`, which you pass to `CellType()`, and another which is created in your "Finally when the cell is drawn" code. That second one actually has an edit control created, but it looks like it has a memory leak because the `CEdit*` value from `new` is just thrown away at the end of the block.
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      1. USAAT
    2. COAAT is right. You creating two different CEdit instances. As far as I remember, you can use GetParent() function to get window parent. http://msdn.microsoft.com/en-us/library/0x2wyab0(v=vs.80).aspx
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      1. USbesworland
    3. COYes thank you, that was a mistake from trying different things.
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      1. USmgalal
 

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